In order to prevent this transaction from implicating himself, Chen Heng had thought of many ways.
A normal transaction would leave enough traces, in the end, no matter what. Although a normal person might not be able to see anything, under the interference of those powerful forces, it was easy for loopholes to appear.
Especially when these people in front of him were likely not prepared to help Chen Heng keep the secret, and might even take the initiative to leak the information.
Judging others by himself, Chen Heng felt that if it was him, there was a high probability that he would keep the information about the transaction and release it at the appropriate time to force Chen Heng, a prince, to obediently obey. This makes Chen Heng their puppet.