In Tanaka's and Watanabe's introduction, Tang Li also learned about the longevity potions they possessed.
The human body has two information system encodings—the human genome DNA and the epigenome.
The former issues instructions to create various proteins with different functions, and every cell is the same in this regard.
However, the human body has a vast number of cells.
Muscles, bones, brain, eyes… cells in different locations and with different functions are all distinct.
It is the latter that tells cells what kind of cell they should become!
Cells in the eyes need to detect light, so they cannot produce skin cells; neurons in the brain naturally cannot become the same as muscle cells.
As humans age, the various cells in the body constantly die and replicate.
The DNA information carried by each cell remains unchanged.
But with increased replication, cells gradually forget what kind of cell they should become.
When eye cells no longer detect light, vision deteriorates; as the number of neural cells in the brain decreases, memory also declines.
The same applies to cells in all other parts of the body and with all other functions.
This is the reason for human aging.
Upon learning this, the Holy Light organization began recruiting scientists from around the world to study how to slow down the aging process.
Ultimately, from long-lived organisms, they discovered enzymes capable of repairing the epigenome and slowing cellular senescence, thus creating longevity potions to delay aging.
However, these enzymes could not yet be synthesized artificially and had to be extracted from long-lived organisms.
"Since the catastrophe began, long-lived organisms have been heavily impacted by extreme weather, leading to mass deaths. The enzymes we can use to produce longevity potions are dwindling."
"Therefore, there is an urgent need to develop body enhancement potions to strengthen these long-lived organisms, making them more adaptable to the harsh environment. Ideally, they would also produce more enzymes."
Tanaka explained to Tang Li, reaching this point.
The matter did not end here.
The scientists of the Holy Light organization were not content with merely delaying aging; they sought to reset cells.
Scientists from the R-country branch were involved in this stage of research.
Ultimately, they mastered bio-reprogramming technology, which could reverse cells from age 80 to 40, and invented longevity potions that reversed cellular aging.
However, this technology was held by the Holy Light organization's headquarters, and they were left with only the last three doses of the cellular reversal longevity potion.
After listening to their explanation, Tang Li feigned eagerness and asked, "If I cooperate with your experiments, can you provide me with longevity potions in the future?"
Tanaka readily agreed, "Of course, absolutely!"
"Alright then, you can go to hell!"
As Tang Li's words finished, gunfire erupted outside the laboratory.
Immediately after, the alarm system for the entire building sounded.
Tanaka and Watanabe rushed to the door. Upon seeing what was outside, they were stunned.
Another "Tang Li" appeared outside the door, holding a submachine gun in each hand, unleashing a barrage of fire on the people who had surrounded the original Tang Li.
These individuals, caught completely off guard, were mowed down like wheat.
"Bad! The two professors are in danger! Expedite rescue!"
Simultaneously, the security forces of the entire building, and indeed the entire biological research institute, upon hearing the call over the intercom, were mobilized and converged on this floor.
But it was too late.
The clone outside Tang Li's laboratory quickly eliminated all security forces on this floor.
It stormed into the laboratory and sprayed gunfire at Tanaka and Watanabe's legs.
They were needed to draw the attention of the entire building's security forces, so they could not die yet.
Next, the clone outside Tang Li's laboratory went to free the bound clone.
After two clones retrieved weapons from the restroom, they blocked the two elevator shafts and the stairwell on this floor, securing the level.
Meanwhile, the original Tang Li, disguised as a cleaner and hiding in the restroom on the floor where the longevity potions were stored, also made a move.
As most of the security forces on this floor rushed downstairs via the stairwell, Tang Li donned an exoskeleton and threw an electromagnetic pulse grenade…