C367
Presumably, Jin had used Chu Qinggu's identity to find out about Murong Qi recruiting for the Jianghu. On the other hand, Murong Qi asked to test him on this matter, because his relationship with 'Chu Qinggu' was not ordinary.
With his relationship with Chu Qinggu, if he knew what Murong Qi wanted to do with the Jianghu people