C404 seclusion
The reason for Wu Hao's closed-door cultivation was obviously to repair the more than one hundred broken meridians in his body. After delaying for more than a year, it was time to repair them.
If he were to directly use the Herba Amaryllii to repair his meridians, the effects would be minimal. Thus, before doing so, he had to refine a bottle of Meridian Rejuvenation Pill