principal怎么读

Although these sea beasts are low-level, they are the favorites of adventurers. There are many valuable things on sea beasts, and one sea beast can be sold for more than ten gold coins. Ning Cheng doesn't care about gold coins now, even if it's a Qi Gathering Stone, he doesn't care much about it anymore. What he cares about is the spiritual stone. With the spiritual energy he needs for cultivation, ordinary energy gathering stones are of no use at all....