Chen Yang decided to help Li Ruojun seize the Black Pearl, not solely because he was moved by her filial piety towards her father, but more importantly, to divert attention.
The Northern Fox Divine Stone is part of the Seven Star Dragon Plate, extremely precious, and once known, it would surely be fought over by countless people.
In this world, there are no secrets that don't leak, his acquisition of the Northern Fox Divine Stone might be discovered.
By then, even if someone investigates, they would only find out that he came here to help someone obtain the Black Pearl from the Black Crocodile's mouth, without associating this with the Northern Fox Divine Stone.
This can be considered a measure to insure against potential future risks.
