C1858 Shang Yao's Regret

Shang Yao kowtowed to Lin Fei willingly.

This was because Lin Fei's pill refining skills were above his.

There were many ways of hearing, but the person who reached that level was the teacher.

Since Lin Fei's alchemy skills were above his, it was no wonder that he was so adept at alchemy.

In that case, Lin Fei was qualified to be his teacher