Hello, how to deal with the lawyer's letter sent to you by Peking University Founder?

Don't pay attention to him.

Whether to sue or not is not informed by the other party, but by the court. SMS and email are liars, so don't pay attention.

Civil Procedure Law

Article 125

The people's court shall send a copy of the complaint to the defendant within five days from the date of filing the case, and the defendant shall submit a reply within fifteen days from the date of receipt. The defense shall state the name, sex, age, nationality, occupation, work unit, residence and contact information of the defendant; The name and domicile of the legal person or other organization and the name, position and contact information of the legal representative or principal responsible person. The people's court shall send a copy of the defense to the plaintiff within five days from the date of receiving the defense.