The five-and-a-half-year-old baby doctor comes to the city to cure those who refuse to listen.

Lin Jianguo didn't sleep well all night.

He lay in bed, his mind drifting between the three boxes of thank-you gifts that were too much to handle and the plaque that read "Unparalleled Hero of the Nation." In the end, all he could think about was his grandson's peaceful little face.

As soon as it was dawn, he got up and went to the front hall to see if Chu Chen was awake yet.

As soon as I stepped into the courtyard, I saw Chu Chen wearing a clean little jacket, sitting on the stone steps, holding a century-old ginseng in his little hands, crunching it like he was eating a radish.

Lin Jianguo's heart pounded with every sound.

"Oh my little darling! You can't eat this like that!" He rushed over and tried to snatch the ginseng away.

Chu Chen pouted and, as if protecting her food, hid the ginseng in her bosom.

"Grandpa, you're stingy," he mumbled a complaint. "You said yesterday that it would all be for me."

"I'll give you everything, but this isn't a radish!" Lin Jianguo wrung his hands anxiously. "This stuff is too potent; your frail body can't handle it, you'll get a nosebleed!"

Chu Chen blinked and handed over the ginseng he had half-eaten.

"Then you eat it." He said seriously, "You were so angry yesterday that you vomited blood, you need to replenish your energy more than I do."

Lin Jianguo took the ginseng, which was still wet with saliva, and his nose tingled and his eyes welled up with tears.

He sighed and sat down next to his grandson. "Chen'er, tell your grandfather the truth, what exactly do you want to do?"

Chu Chen swallowed the ginseng residue in his mouth and clapped his hands.

"I want to make medicine."

He pointed to his small frame. "I'm too weak. A gust of wind would knock me over. How will I protect Mom and Grandpa in the future?"

"The white-bearded grandfather in my dream taught me a formula that can cleanse the tendons and marrow, and strengthen the body. I want to try it."

Upon hearing that it was "Grandpa Whitebeard from my dreams" again, Lin Jianguo's doubts immediately vanished.

"What do you want? Grandpa will prepare it for you!"

"I want our family's best pharmacy, the one that makes pills specifically for the palace," Chu Chen said, counting on his fingers. "And I also want the finest bronze medicine furnace."

"Also, no one can disturb me while I'm refining medicine. I need to get my body in order before Uncle Liu returns from that 'big circle' he went to find."

"Okay!" Lin Jianguo readily agreed. "Not only the pharmacy, but from today onwards, the entire backyard is sealed off! Not even a fly is allowed to get in!"

The news of the change of manager of Jishetang spread like wildfire, reaching all the major pharmacies in the capital within a day.

In the front hall, Lin Fu, dressed in a faded coarse cloth jacket, was wiping the counter back and forth with a rag.

He kept his head down, feeling the gazes coming from all directions, a mixture of sympathy, mockery, and schadenfreude.

"Hey, isn't this Master Fu? Why are you doing this rough work yourself?" an old customer who came to see the doctor teased sarcastically.

Lin Fu's body stiffened, and he gripped the rag in his hand tightly.

"Boss Wang is joking. I'm just a waiter now." He forced a smile that looked more like a grimace.

Good morning, young master.

A waiter's respectful voice sent a shiver down Lin Fu's spine.

He looked up and saw Chu Chen strolling over from the backyard with his hands behind his back.

Lin Fu's breath hitched, and he instinctively bent over.

"Young...Young Master." He squeezed out these three words through gritted teeth, feeling as if he were drinking his own blood.

Chu Chen stopped in front of him and looked up at him with her small face.

"Uncle Fu, your table isn't clean." He stretched out his little finger and ran it across the counter, leaving a clear gray mark.

"Look, it's all gray."

Lin Fu's face instantly turned a deep liver color.

Looking into Chu Chen's innocent eyes, he felt an urge to pounce on him and bite the little brat's throat off.

"It's...it's my fault, I'll wipe it clean right away." He replied humbly, picked up a rag, and wiped it frantically.

Chu Chen grunted in agreement, like a junior leader inspecting his territory, nodded in satisfaction, then strolled away with his hands behind his back.

Watching that small figure disappear through the door, Lin Fu slammed the rag in his hand onto the ground with a loud "bang".

His chest heaved violently, and the resentment in his eyes almost materialized.

That evening, a dark figure sneaked out of the back door of Jishetang and disappeared into the dark alley.

In the inner hall of Huichuntang, south of the city.

Manager Zhao of Huichuntang stroked his goatee and looked at the emaciated Lin Fu across from him.

"Brother Lin, are you telling the truth? That old bastard Lin Jianguo really gave 30% of his profits to a five-year-old toddler?"

"Absolutely true!" Lin Fu's voice was hoarse. "That brat is now the ancestor of Jishetang! Even the Zhou family sent him a three-courtyard siheyuan (traditional courtyard house) and a plaque that reads 'Peerless Hero of the Nation'!"

Manager Zhao gasped, and the teacup in his hand trembled.

"It seems the Lin family has managed to climb up the Zhou family's coattails." His eyes gleamed. "This is going to be difficult."

"Easy!" Lin Fu suddenly raised his head, his eyes gleaming with madness. "If the Zhou family can back him up, can't we just cut off his supply lines?"

"Jishetang may seem like a large and powerful enterprise, but what it consumes the most every day are those common medicinal herbs for treating headaches and fevers. Things like licorice root, isatis root, honeysuckle..."

"If Manager Zhao, you join forces with several pharmacies in the capital to cut off their supply, Lin Jianguo will have to close down within three days!"

Manager Zhao's eyes lit up. "Great plan! But what if he sources the goods from out of town..."

"It's too late." Lin Fu sneered. "Distant water can't quench immediate thirst. Besides, I have a backup plan."

He took a small oil paper packet from his pocket and placed it on the table.

"That brat is going to start refining medicine tomorrow, saying it's to strengthen his body."

"This is 'Red Fire Saltpeter,' colorless and odorless. Mixed with charcoal, once the furnace temperature rises, it comes into contact with honey or maltose used for alchemy..."

Lin Fu made an explosion gesture. "With a bang, he was gone."

Manager Zhao's eyes turned greedy as he looked at the package.

"Once this is done, my position as the head manager of Huichuntang will be yours."

"It's a deal!"

The next day, in the alchemy room of Jishetang.

This room hadn't been used for decades, so Lin Jianguo specially had it cleaned spotlessly.

Chu Chen stood in front of a bronze alchemy furnace that was half his height, and stood on tiptoe so that he could just touch the cool furnace wall.

"Young master, the silver bone charcoal you requested has arrived."

Lin Fu carried a basket of shiny black charcoal, walked in with his head down, and poured the charcoal next to the stove.

He put down the basket, but instead of leaving immediately, he picked up a broom and began sweeping the corner, his eyes fixed on Chu Chen out of the corner of his eye.

Chu Chen, like a curious child, circled the alchemy furnace twice, then picked up a handful of charcoal to examine it.

He brought the charcoal to his nose and smelled it, then frowned slightly.

"Uncle Fu, why does your charcoal have a strange smell?"

Lin Fu's heart skipped a beat, but he remained expressionless.

"Reporting to the young master, this silver bone charcoal is just right; it burns brightly without producing smoke."

"Oh." Chu Chen nodded, as if he believed him.

He threw the charcoal back into the basket and then began rummaging through the box of medicinal herbs that the Zhou family had sent.

After searching for a long time, he took out something that looked inconspicuous, like a weed, and threw it into the alchemy furnace.

He clapped his hands and muttered to himself.

"This charcoal smell is unpleasant. Add some herbs to cover it up, otherwise it will suffocate my new little figure." He took out a small Ultraman toy from his pocket and placed it on the table next to him with great seriousness.

A subtle, unnoticed smile appeared on Lin Fu's lips.

Vanilla? You idiot.

He lowered his head and continued sweeping. After finishing, he respectfully withdrew.

Chu Chen watched Lin Fu's figure disappear through the door, and the innocence on his face vanished instantly.

He walked to the alchemy furnace, reached out his small hand, took the "fragrant herb" out of the furnace, and put it back in his pocket.

That's not a fragrant herb at all.

That's the "Ten Thousand Mile Tracking Incense," a secret recipe of the Medicine God. Once you've been exposed to even a trace of its scent, the aroma won't dissipate for three days, no matter where you go.

Chu Chen placed the pieces of "red embers" that Lin Fu had sent into the bottom of the furnace one by one. Then, he picked out a few herbs from the box of top-grade medicinal herbs that were mild in nature but would produce a lot of smoke when heated, and threw them all in at once.

He picked up the tinderbox and lit the charcoal.

After finishing all this, he moved a small stool and sat in front of the alchemy furnace, holding the Ultraman figure in his hand and making "biubiubiu" sounds, having a great time.

Behind a rockery a few dozen meters away outside the alchemy room.

Lin Fu stared intently at the direction of the alchemy room, his palms sweating profusely.

Soon, soon.

Once the furnace temperature rises, that little beast, along with this entire alchemy room, will be blown to smithereens!

He could almost hear the loud noise and see Lin Jianguo's face contorted in agony.

"You little bastard, you'd better die!" he gritted his teeth, squeezing out the words.

Just then.

"boom--"

A muffled thud came from the direction of the alchemy room!