My health recovery is incredibly fast.

The dazzling rays of light shone into our eyes, but they could not illuminate the dark clouds below.

The blue barrier surrounding the airship trembled slightly, seemingly battling an extremely fierce gale. If the dark clouds below were used as a reference point, it could be seen that the airship had shifted a considerable distance due north within just a few seconds.

Shazo drew the curtains, glanced at his pocket watch, and said, "I have to go see Master Rexor. You can meditate on your own tonight. I'll be back once the airship has left the storm."

"Okay." Anru saw her boyfriend to the door. "Be careful."

"Don't worry, a master is guarding us."

Xia Zuo closed the door and stepped into the bald man's room.

He skillfully sat down at the opposite corner of the magic circle, facing Rexor, with an hourglass of flowing red sand between them.

Rexol pulled out several vials of potion from his leather armor and handed them over. "Drink these. We might not be able to rest for half a month."

Xia Zuo took the glass bottle, used his detection technique to check the effects of the medicine, and then poured it into his mouth. His cheat code prompted him in his mind that he had obtained multiple effects.

"From now on, we will hand over the duties every 3 hours."

"Rexol pointed to the glass window behind him, its curtains tightly drawn. "If the airship shakes a lot, just take care of yourself. I'll keep an eye on the hourglass."

Xia Zuo glanced around and asked, "Should I tie myself up and secure myself? What if the airship tilts or capsizes..."

Rexor seemed to have heard something amusing, a smirk playing on his lips as he gave him a strange look. "Then we're all doomed. What's the point of caring about the hourglass? What branch of magical alchemy did you study at the academy?"

“The study of unusual objects,” Xia Zuo replied.

"No wonder you didn't know; this involves advanced knowledge of mega-creation science."

Rexor's tone softened. "Under ideal circumstances, the airship won't tilt more than 5 degrees, so there's no need to worry about the two issues you mentioned."

"That's good..." Xia Zuo nodded.

“Come, cast the Curse of Decay. Call me in three hours,” Rexor said as he dispelled the spell.

Xia Zuo quickly followed up with the curse, slowing down the falling red sand.

Among the potions just now, there was an unknown potion that temporarily enhances the power of curse spells.

At this moment, Xia Zuo unleashed a Curse of Decay with 10 points of power, which increased the rate at which his energy was consumed.

Three hours later, the two successfully completed their first handover.

Xia Zuo cast a 3-point concentration spell on himself, entering a deep meditation that would last for 3 hours.

During his final year at the academy, he completed all the formulas needed to advance to the master-level poison alchemist. Now, he mainly uses his meditation time to expand his spiritual ocean.

After meditating for 3 hours, Shazor awoke and completed the second handover with Rexor.

Seven days passed in this way, and the airship arrived safely at the middle of the extreme storm.

Although the curtains in the room were drawn, Xia Zuo could still feel the wind outside growing stronger.

There is often a feeling of the pod being suddenly propelled and then immediately brought to a stop.

Fortunately, the hourglass was firmly held to the floor by the magic circle, and it would not leave the floor unless it was turned over by the person sitting on the magic circle.

Two more days passed.

The commotion caused by the airship's sideways movement became even greater.

Xia Zuo had to lower his center of gravity and use his free left hand to support himself on the ground to prevent his body from swaying and interrupting the spell.

As the days passed, the wind gradually weakened, and the airship was no longer as vulnerable in the gale as before.

Finally, on the 15th day, they escaped the extreme storm.

Xia Zuo had been suffering for many days, and his back and legs ached, and his head felt dizzy.

Just as he was about to go to his room to rest…

A low, rumbling vibration came from beneath Rexor's leather armor.

The bald man opened his eyes and pulled out a vibrating six-pointed star pendant from his collar.

"Hmph..." Rexor's face was ashen. "It seems this Blood Demon is very important to them, and it really did attract the Otherworldly Watchers."

What kind of demonic overseer...? What is that...? Xia Zuo rubbed his aching head, glanced at the bald man's face, and realized that something was seriously wrong.

Rexor placed several vials of potions in front of the other person. "Hang in there, Shazo. I'll be back soon."

The bald man darted out of the room, pushed open the door, and left.

Xia Zuo picked up the potion, glanced at it, uncorked it, poured it into his mouth, and continued to suffer the curse of decay.

Sylvia's voice came from outside the door, "Shazo, I will take good care of Anruer, don't get distracted."

"Thank you...cough cough cough," Xia Zuo coughed a few times to clear his throat, "Thank you, Sylvia."

A loud howl came from outside the window, "Awooo~~~"

The red sand in the hourglass instantly began to boil, and the energy consumption to maintain the curse increased rapidly.

Xia Zuo sighed and quietly activated [Blood Sacrifice Spell - Incomplete]. The feeling of his brain cramping instantly disappeared, and he felt much more relaxed.

Curse spells cast with life force are no different from those cast with energy; the energy fluctuations, appearance, and spell glow are essentially the same.

Xia Zuo hadn't activated this trait before purely out of caution; if Rexor had some special detection spell, things would be disastrous.

The red sand tumbled in the hourglass, trying to break free from the curse on its body, while the real-time health regeneration speed on the character template fluctuated wildly.

While listening to the commotion outside, Xia Zuo calmly maintained the spell, ready to deactivate [Blood Sacrifice Spell] at any moment.

A series of violent explosions came from outside the airship.

Once Xia Zuo's perception reached 12 o'clock, he could easily determine that the source of the sound was concentrated about 100 meters to his left and front, indicating that someone was using weapons from an airship to bombard the enemy.

The explosions were subsiding, and faint moans drifted through the windows. Red Sand seemed to realize that its reinforcements were failing, and its struggling posture grew weaker and weaker.

To the naked eye, Red Sand seems to be a little smaller?

Xia Zuo quietly deactivated [Blood Sacrifice Spellcasting], using his energy to maintain the spell's consumption.

The sound of footsteps approached the door, and Rexol pushed it open and walked in. "How are you, Shazo? Can you still hold on?"

"Cough cough... I'm alright, Master. I can hold on for a little while longer." Xia Zuo coughed a few times and said in a hoarse voice, "The red sand was moving a lot just now, trying to break free from the hourglass."

Rexor leaned close to the hourglass and examined it carefully for a few seconds. "The Blood Demon's life force has weakened a bit... This is a bit troublesome. If this guy chooses to self-destruct, we won't be able to stop it."

Xia Zuo frowned and looked at the bald man, "Self-destruction?"

Rexor let out a deep breath. "A Blood Demon can manipulate the blood of all living beings, including their own. Self-destruction means it keeps consuming its own blood, and when its blood runs out, it dies... Generally speaking, no Blood Demon would do this. But this Blood Demon attracted the attention of the Otherworldly Watchers."

Rexor's gaze deepened as he stared at the hourglass without speaking.

He sat down in silence and took over the task of maintaining the curse of decay.

Xia Zuo did not receive instructions to return to his room to rest, so he sat cross-legged on the spot and cast a calming spell to enter a deep meditation.

A sharp "bang!" startled Xia Zuo from his meditation, as if someone was attacking the airship's barrier.

The moment he opened his eyes, he saw the bald man walk past him.

“Another Otherworldly Watcher has arrived! Shazo, keep an eye on the hourglass, I believe you can do it!” Rexor flashed out of the room.

Xia Zuo frowned and unleashed the Curse of Decay. The red sofa darted wildly through the hourglass. A few seconds later, he was forced to activate [Blood Sacrifice Spell].

The explosions lasted a long time and came from three different sources.

As the explosion faded, the red sand visibly diminished.

"Master! Master!" Xia Zuo shut down [Blood Sacrifice Spellcasting] and shouted into the room.

"Xia Zuo!" An Ru'er's anxious voice came from outside the door.

“No, don’t go in.” Sylvia pulled her back.

"Don't come in. I'm fine. It's just that this thing is almost gone."

As soon as Shazo finished speaking, Rexor rushed in through the door, which then closed behind him.

The bald man's face was ashen. "What secret does this Blood Demon know, hmm?! Why has it attracted so many otherworldly demon observers?"

The red sand has decreased even more.

"Don't even think about self-destructing, you piece of trash!" Rexor growled, drawing a dagger from his waist and slashing his finger, letting the blood drip onto the hourglass.

The blood that touches the glass shell of the hourglass is absorbed completely, just like water dripping onto sand.

The amount of red sand has increased, but it is still slowly decreasing.

Rexor simply poured himself a vial of blood, sprinkled in alchemical powder to prevent clotting, and handed it to Shazo. "Hang in there. Federation air support will arrive in ten minutes. If the red sand is still decreasing, pour this vial of blood on it, but don't pour too much, or this bastard will come out."

“Yes, Master,” Xia Zuo said, gripping the glass bottle tightly.

The bald man left the room again, and the explosions outside the airship intensified.

Xia Zuo cast the Curse of Decay with his right hand, while holding a glass bottle in his left, he poured a drop of sand into the hourglass from time to time, keeping the red sand at the same size.

Thanks to the university's nurturing, he has been doing this kind of mechanical operation for almost ten years, and he is very skilled and precise in it.

But everyone underestimated the Blood Demon's determination to self-destruct.

The final explosion faded away, and ten seconds later, the Blood Demon resolutely accelerated its self-destruction.

Xia Zuo poured an entire bottle of blood on it, but it didn't work. "Big..."

Before he could finish speaking, Rexor rushed into the room.

The bald man's face was dark, and even his shiny forehead had become dull.

“Hmph…” Rexor sat down angrily, took out a metal box from his pocket, inside which was another small box.

The small box contained the waste residue of the shapeshifters that Shazo and Dim had eliminated.

The bald man cut his finger, poured a lot of blood into the box, then stirred the bloody residue with his finger and smeared the bloody mess onto the hourglass.

The red sand solidified, as if it had been frozen in place.

"I have seen more than a dozen blood demons that wanted to self-destruct in the past."

Rexol wiped the blood off his hands, and the wound on his finger healed in just a few seconds. There was no need for spells or ointments.

The bald man's vitality attribute was a question mark, which Xia Zuo had already discovered, so the scene before him did not surprise him.

"It takes at least fifty years to grow from a Transformer to a Blood Demon, and the difficulty of advancement is comparable to that of a high-ranking mage. Such Blood Mages will not easily end their own lives unless they know the secrets of the Church of the Otherworldly Demons."

As Rexor spoke, he took a doll out of his pocket.