C271 Borrowing a knife to kill someone

After pondering for a bit, Yi Yan didn't immediately consume the two mutated Puyuan Pill. Instead, he took out a light blue normal Puyuan Pill and threw it into his mouth.

Originally, Yi Yan had never used a Puyuan Pill before, so in order to test what differences a mutated Puyuan Pill had, he first had to understand the effectiveness of a normal Puyuan Pill