People in the Qin Dynasty sought good fortune and avoided misfortune.

Chapter 253, This brother-in-law is capable of getting along with...

Hearing footsteps outside the door, Xu Qing turned to look at the figure outside.

"Bai Yifei? Why is he here? Did he discover Yan Lingji's whereabouts?" Xu Qing wondered to himself.

Hearing the approaching footsteps, Xu Qing put down the herbs in her hand and took out several more warming herbs to avoid Bai Yifei noticing anything.

The door was suddenly pushed open, and Bai Yifei, dressed in black, took off his black mask and stood in the doorway, looking around at the layout of the outbuilding.

The small side room was filled with various tools, and a huge medicine shelf held various medicinal herbs. On the side shelf were various medical books, but the most eye-catching thing was the alchemy furnace placed in the center of the room.

"The Imperial Physician is still refining medicine late at night; he's quite diligent," Bai Yifei said, looking at Xu Qing under the medicine shelf.

"You flatter me, Lord Marquis. Is there anything I can do for you so late at night?" Xu Qing said with a faint smile.

Seeing Bai Yifei's somewhat unpleasant expression, Xu Qing muttered to himself, guessing that Bai Yifei's fight with Tianze had caused the backlash of the cold energy within his body to erupt.

Otherwise, the other party wouldn't have suddenly come looking for him. Thinking of this, Xu Qing began to think of what words to use to persuade the other party to castrate himself.

Although this is my brother-in-law, isn't he still my cousin?
Bai Yifei entered the room, his cold eyes glancing at the several herbs laid out in front of Xu Qing. Without exception, they were all highly potent herbs, clearly intended to help him treat the defects in his cultivation technique.

"Tonight I met an interesting person at the Crown Prince's residence. That woman is of a Baiyue ethnicity and is very skilled at playing with fire," Bai Yifei said in a deep voice, standing beside the table.

Upon hearing this, Xu Qing was slightly taken aback, and asked, feigning ignorance.

"A Baiyue woman?"

Seeing Xu Qing's thoughtful expression, Bai Yifei continued to explain.
"You've seen this woman before. She's the one who wreaked havoc in the council hall. Her name is Yan Lingji, and she's one of Tianze's subordinates."

Before Xu Qing could reply, Bai Yifei walked to the alchemy furnace and continued speaking.

"This woman is very beautiful; you should like her."

“Your home is really lonely. It might be better to have a woman there, and she can protect you in certain situations.”

As he spoke, Bai Yifei took out a medicine bottle from his hand and placed it on the alchemy furnace. The brown medicine bottle had purple patterns on it, and it was clearly the bottle containing the Transformation Gu.

"My lord, what do you mean by this?"

Xu Qing glanced at the medicine bottle, then looked at Bai Yifei and asked.

Xu Qing was puzzled by Bai Yifei's sudden actions. Yan Lingji said that Bai Yifei had his eye on her, but judging from Bai Yifei's words, it seemed that he was planning to give Yan Lingji to him.

"Tonight I fought Tianze, and the backlash from the cold energy in my body was becoming uncontrollable. This woman has a natural ability to control fire, and her blood might be able to suppress my condition."

"If it's useless, I'll give it to you as a gift. The Withered Gu is a good shackle; it can help you control her well."

Bai Yifei knew Xu Qing's character well. After all, in Xinzheng, what was as famous as Xu Qing's reputation as a divine doctor was his dashing and romantic nature.

Even he was amazed by Yan Lingji's beauty, let alone Xu Qing.

Although he was reluctant to admit it, he was indeed asking Xu Qing for a favor when it came to treating his illness, and the initiative was in Xu Qing's hands.

The slight clash with Tianze tonight intensified the backlash from the already uncontrollable chill, making him even more ferocious. He must quickly resolve the flaws in his cultivation technique, otherwise his strength will not be able to advance further in this life, and he may even suffer fundamental damage.

He gave Yan Lingji to Xu Qing as a gesture of goodwill, hoping that Xu Qing would work harder to treat his illness.

"You don't need to worry about Mingzhu. As long as you don't say anything, she won't know," Bai Yifei said to Xu Qing.

"My lord, what are you doing?"

Xu Qing stared at Bai Yifei in astonishment, unsure of what to say for a moment.

Although he didn't need Bai Yifei to help him capture Yan Lingji, he did feel Bai Yifei's sincerity.

This brother-in-law is really something! He not only sent people to him, but also helped him cover it up to the Tide Demoness. A brother-in-law like this is really hard to find.

I actually thought I could trick him into castrating himself, which is really...
"Please wait a moment, my lord."

Under Bai Yifei's questioning gaze, Xu Qing walked to the edge of the medicine shelf, opened a drawer, took out a bright red medicine bottle, and tossed it to Bai Yifei.

"Crack~"

A wisp of icy thorns, condensed from cold air, caught the medicine bottle. Bai Yifei looked at the bottle and asked...
"what is this?"

"This is a pill I refined. Although it cannot completely resolve the coldness in your body, it can suppress it to some extent. I was planning to have Shu'er give it to you another day, but since you are here, I will give it to you in advance."

Xu Qing smiled slightly and said.

Since he had agreed to treat Bai Yifei, he would naturally fulfill his duty as a doctor; this was his bottom line and one of his few moral principles.

Bai Yifei opened the medicine bottle and poured out a fiery red pill.

"This elixir is made by me using a mixture of various medicinal materials, including the fire toad from the Western Regions, snow lotus from the Tianshan Mountains, deer antler, and cold magnolia flowers. It is called the Yin-Yang White Jade Pill."

The *Suwen* states, “Therefore, in the separation and union of the three Yin channels, Taiyin is the opening, Jueyin is the closing, and Shaoyin is the pivot. The three channels must not be separated from each other; they must be engaged without sinking, which is called one Yin. Yin and Yang accumulate and pass through to form a cycle, with Qi inside and form outside, thus complementing each other.”

"After taking the pill, one can circulate internal energy and form a grand cycle, which can push the yin energy in the body to the extreme of yin. When yin reaches its extreme, yang is generated. Then, by using the medicinal power of the Yin-Yang White Jade Pill, yang energy is generated, and the yin and yang are unblocked, thus achieving balance."

"During this process, bloodletting will be required to release excess cold energy from the body. There are some risks involved, so please consider this carefully before taking the medicine, my lord."

Xu Qing slowly explained the function of the Yin-Yang Jade Pill to Bai Yifei, but her eyes were filled with heartache as she looked at the pill.

He used up a lot of precious medicinal herbs to make the elixir, and each one was priceless.

Upon hearing this, a glint of light flashed in Bai Yifei's cold eyes. Although he didn't quite understand what Xu Qing was saying, the pill in his hand made his blood boil.

"I am grateful to the Imperial Physician for protecting me."

Bai Yifei swallowed the pill without any hesitation. Firstly, it showed his trust and respect for Xu Qing, and secondly, if any problems arose, Xu Qing's presence would be able to help him.

Looking at Bai Yifei's decisiveness, Xu Qing couldn't help but think more highly of him.

It can only be said that he truly deserves to be the ruler of South Korea; his decisiveness far surpasses that of General Ji Wuye.

If Nanyang hadn't surrendered to Qin, even if Wei Zhuang had killed Ji Wuye, he probably still wouldn't have been able to get past Bai Yifei.

As soon as the pill entered his mouth, Bai Yifei could feel a powerful medicinal force explode within his body, with cold and heat spreading out simultaneously, causing the cold energy accumulated within him to become restless.

Bai Yifei's already pale face became even paler, with frost covering his eyebrows, while the other half of his face was flushed, as if he had taken a powerful tonic to restore his virility.

"Circulate your internal energy, use the medicinal power to draw out the cold energy, and circulate it through the Great Heavenly Circuit," Xu Qing said in a deep voice. Bai Yifei sat cross-legged on the ground and began to circulate his internal energy according to Xu Qing's instructions. The powerful medicinal power flowed through his meridians.

Three forces intertwined within Bai Yifei's body, impacting his meridians. This excruciating pain caused Bai Yifei's expression to turn pained.

Seeing that the time was ripe, Xu Qing picked up the dagger on the table, walked to Bai Yifei's side, and cut two wounds on his wrist, from which blood, exuding a chilling aura, flowed out.

Bright red blood droplets fell onto the floor and instantly froze into ice shards.

The chilling energy that had been desperately resisting could no longer withstand the medicinal power of the Yin-Yang White Jade Pill once it had a place to be released.

The cold energy blocking Bai Yifei's meridians was instantly broken through. Most of the cold energy was devoured and assimilated by the medicinal power, while a small portion of the yin and cold energy was dissolved by the heat in the elixir.

He could clearly feel that his body felt much lighter, especially as the pain from the backlash of the cold and the blocked meridians became clearer, and his perpetually cold body surface even began to warm up.

At this moment, Bai Yifei was extremely grateful that he had listened to Madam Mingzhu's advice, chosen to cooperate with Xu Qing, and asked him to help him treat his illness.

Suppressing his excitement, Bai Yifei began to circulate his internal energy more seriously.

As Xu Qing watched the frost and sweat on Bai Yifei's face gradually disappear, a smile appeared on her originally solemn face.

The Yin-Yang White Jade Pill was created by him by combining the alchemy techniques he obtained from the Hidden Dragon Hall, the medical heritage he inherited, and the pharmacology of the Baiyue people. Theoretically, there is nothing wrong with this pill, but what the actual result will be after taking it is something that no one knows for sure.

Moreover, the bloodletting method used by Sichuan and Chongqing shamans to treat bat blood poisoning is also an extremely risky method.

Xu Qing wasn't very confident about combining the two, but after implementing it, the results were unexpectedly good.

"I really am a medical genius. I have helped Bai Yifei so much this time, so I must ask for more benefits. Otherwise, I would be wasting the precious medicine I used."

Xu Qing looked at Bai Yifei, pondering what she should want.

Bai Yifei was, after all, a marquis of the State of Han, and with such a large fiefdom as Nanyang, his family must have been very wealthy.

After circulating his internal energy for two full cycles, Bai Yifei finally managed to refine the immense medicinal power within his body and slowly opened his eyes.

Feeling the chill receding from his body and the slight warmth returning to his skin, Bai Yifei felt a mix of emotions, including excitement and感慨.

The flaws in his cultivation technique that had plagued him for years were suppressed by Xu Qing with a single pill, and the effect was much stronger than when he drank human blood. After taking this pill, he felt that he would not need to drink human blood for at least one or two months.

After regaining his senses, Bai Yifei tore open his robe, bandaged the wound on his wrist, and said to Xu Qing in a deep voice.
"Thank you, Imperial Physician."

"It's not easy to hear the word 'thank you' from the Marquis's mouth," Xu Qing said jokingly.

Bai Yifei merely glanced at Xu Qing indifferently and said coldly.

"If the Imperial Physician does not wish to hear this, I may take back those two words."

Another arrogant and tsundere.

Xu Qing mentally complained for a moment, then smiled and said...
"I would prefer something more tangible than just verbal thanks; the cost of the Yin-Yang White Jade Pill is too high."

Looking at Xu Qing, who resembled a shrewd businessman, Bai Yifei fell silent, finally managing to utter a single sentence after a long while.

I will repay this favor in the future.

Xu Qing's smile vanished instantly, and she glared at Bai Yifei with hostility.

"My lord, you are a Marquis of Han, with Nanyang, a land of great wealth, as your fief. Do you really need to owe debts?"

Do you really think he learned martial arts to protect himself?

If anyone wants to take the medicine for free, he wouldn't mind showing them what true power is.

“The tax collection period in Nanyang hasn’t started yet, or you could choose two plots of fertile land, each a thousand acres, in Nanyang,” Bai Yifei said.

It wasn't that Bai Yifei didn't want to pay; he was genuinely poor.

It's hard to believe that the Marquis of Blood Robe, who owns such a wealthy place as Nanyang, would complain about being poor, but that's the truth.

Bai Yifei commanded 100,000 White-Armored Soldiers, who were extremely loyal to him and even obeyed only the orders of the Blood-Clad Marquis, not the orders of the King.

The reason for this was that Bai Yifei bore all the expenses for the White Armor Army's pay, weapons, and so on, relying on the wealthy land of Nanyang.

Although Nanyang is wealthy, it still struggles to support an army of 100,000. It is only thanks to the donations from Emerald Tiger that it can barely support the White Armor Army.

So he may seem to have a lot of money, but in reality, it's just an empty shell.

The value of two thousand acres of fertile land goes without saying, but Xu Qing is about to leave South Korea, so these two thousand acres of fertile land are of no use to him at all.

However, for someone as proud as Bai Yifei to renege on his debt, he must genuinely be facing difficulties. Therefore, Xu Qing compromised and said...
"Fields are useless to me, but Snowcloth Fort should still have a lot of medicinal herbs, right?"

"I will send someone to deliver it to you tomorrow. I will still remember this favor. If you have any requests in the future, I will do my best to help you," Bai Yifei said in a deep voice.

After looking Bai Yifei over, Xu Qing pondered for a moment and then nodded. Bai Yifei's favor was still very useful to him.

In the future, Nanyang will be submitted to the Qin state. He can use this favor to exchange for more value in the process. With the wealth of Nanyang, he can definitely exchange it for the title of Marquis of Qin.

"There are also six pills in the bottle, which can help you suppress the cold energy for a year. Take them once every two months," Xu Qing nodded and said.

Bai Yifei nodded slightly to Xu Qing, took the medicine bottle, turned and left. After walking into the courtyard, Bai Yifei's figure disappeared instantly.

"Bai Yifei, Nanyang."

After sighing, Xu Qing took out the medicinal herbs again and prepared the antidote for the withered gu.

After grinding the herbs, he took out a medicine bottle from his bosom. Inside the bottle was the offspring of the withered gu, which had been given to him by the Tide Demoness.

The withered gu is a gu, and gu will kill each other, with the strong devouring the weak. The so-called antidote is nothing more than two equally matched offspring gu fighting within Tianze's body, resulting in both of them being injured.

However, one of the two poisons will inevitably die, and the living will devour the dead, eventually becoming even stronger.

Therefore, Bai Yifei never intended to truly liberate Tianze. When the Huaku Gu became too powerful to be suppressed, unless the mother Gu was used to resolve the issue, the offspring Gu would eventually drain Tianze's lifeblood.

These herbs are used to reduce the impact of the battle between the two offspring Gu, thus protecting the host.

Pour the herbal powder into the medicine bottle, and a temporary antidote is ready.

(End of this chapter)