It also made Ouyang Zhi forget that he was saved in the end but turned into a blood-sucking monster.
Of course, not only Ouyang Zhi had to forget this; everyone who knew Ouyang Zhi had become a monster had to forget. Otherwise, when Ouyang Zhi wakes up in the future, those around him wouldn't be able to hide the truth, and Ouyang Zhi would find out again.
So afterwards, Da Long, Xiao Long, and others on the island all took the medicine and were hypnotized by Prince Jia Sen.
Finally, Prince Jia Sen thought of many methods. He first recorded a video for himself, then after taking the medicine, he played the video and let his video-self hypnotize him.
He was the last one to be hypnotized.
When he woke up, he indeed forgot that segment of memory, forgot the events he encountered with Xiao Long and Ouyang Zhi on the ship, the incident of Ouyang Zhi's death, Ouyang Zhi's resurrection, and most importantly, forgot that Ouyang Zhi possessed formidable abilities.
