C315 truthful explanation

Just from the short message on the phone, it was already deleted by Zhang Zitao and Bai Yan to the point where there were no traces at all.

However, from the number displayed on his phone, the Second Boss also found a doubt.

When Zhang Zitao called Bai Yan on his phone, it would directly display his comments.

On this point, it was obvious that the two of them knew each other before