They had never felt like they'd been this tired before. Their body felt like it's been hollowed out. This is more tiring than when they were still studying back then. They all resentfully looked at Cheng Sheng. Just how did he create this weird talisman? They thought and looked at their copy of the Cleansing Talisman. The obscure lines are actually creating a group of symbols that they had never seen before. No wonder that recreating Cheng Sheng's Cleansing Talisman is an impossible task. However, they can slowly understand how it is made now that Cheng Sheng is teaching them how to draw the symbols.
Since they were all prominent cultivators, they learned it after a day. The time is also pressing on them so one day is the fastest they could recreate Cheng Sheng's Cleansing Talisman. As to the final step – the talisman's essence…