Many possible answers had been found through trial and error, and now, they were just short of the final step. Naturally, the arduous task of making that step fell onto Xiao Yifei's shoulders. However, the problem troubling Xiao Yifei was one that, for the time being, had no solution.
Even though their research revolved around issues related to the male reproductive organ, each person's constitution differed, causing varied effects. Despite having an ample number of samples to work with in their lab, they simply couldn't accommodate every individual.
Having samples from the entire human race was one thing, but adapting their findings to each person was yet another challenge. Even though they had identified certain drugs that worked for some people, it was impossible to apply this to everyone universally.
The issue Xiao Yifei was tasked with was this very problem of adaptability.