C2001 Death Mantis
There were two reasons why Feng Yixiu had killed the Takagi Sea people. Firstly, he was afraid that the Takagi Sea people would reveal too much information, causing the other two great Divine Officials to be on guard. If they found out about the information in the Scarlet Jade Sachet, it would be over.
Secondly, he wanted to kill the Takagi Sea people as a warning to the others