Ji Jing's letter is illegal.

Legal analysis: 1. A lawyer's letter is an advance notice that one party to a dispute is ready to file a lawsuit against a dispute between users.

2, the lawyer's letter itself will not have legal consequences, just a warning.

If you don't want to go to court, discuss with the other party how to solve the dispute after receiving the lawyer's letter.

If you think I have no problem and am not afraid of being sued by the other party, then you don't have to worry about the lawyer's letter.

5. The lawyer's letter is the negotiation behavior of the other party before the prosecution.

So the lawyer's letter itself is not illegal.

Legal basis: Article 28 of the Lawyers Law allows lawyers to engage in the following businesses:

(a) to accept the entrustment of natural persons, legal persons or other organizations as legal advisers;

(two) to accept the entrustment of the parties in civil cases and administrative cases, to act as agents and to participate in litigation;

(3) Accepting the entrustment of criminal suspects and defendants in criminal cases or legal aid agencies to act as defenders according to law, accepting the entrustment of private prosecutors in private prosecution cases, victims in public prosecution cases or their close relatives to participate in litigation as agents;

(four) to accept the entrustment and represent the complaints of various litigation cases;

(five) to accept the entrustment and participate in mediation and arbitration activities;

(6) Accepting entrustment to provide non-litigation legal services;

(seven) to answer questions about the law and write litigation documents and other documents related to legal affairs.