Originally:

After the battle in Emperor City early this morning, Zhang Yi was convinced that the mastermind was Lin Ruo!

It wasn't until later, when Lin Ruo suddenly sent a message and came to clarify in the evening that she wasn't the traitor, that Zhang Yi realized: the traitor might really not be Lin Ruo, and he was still lurking by his side!

So, Zhang Yi deliberately showed in public that he had no trust in Lin Ruo, firmly identifying her as the mastermind and even killing her.