Naturally, the principal could tell that Tan Song didn't think that he had done something wrong. His tone was perfunctory. People like him were already used to special priorities. Tan Song would never accept it if they continued talking about how all humans were equal.
However, the principal still conveyed the school's attitude in a business-like manner. "Wang Li's phone call made it clear that he was instructed by the Tan family. Since there is no evidence of Tan Jing's involvement, she will not be punished for the time being. I only made this call personally to inform you of this as during the day, the school tried contacting you and your wife many times, but no one was willing to come to the school to deal with this issue. So, this is the only way we could do it; something like a simple parent-teachers meet."