Legal analysis: There is no necessary connection between receiving a lawyer's letter and being sued. Those who meet the conditions for prosecution can sue. Mainly depends on the parties concerned. The specific conditions are as follows:

The plaintiff is a citizen, legal person and other organization that has a direct interest in the case; There is a clear defendant; There are specific claims, facts and reasons; It belongs to the scope of civil litigation accepted by the people's court and the jurisdiction of the people's court under appeal.

legal basis: article 12 of the civil procedure law of the people's Republic of China, a complaint shall be submitted to the people's court, and a copy shall be submitted according to the number of defendants. If it is really difficult to write a complaint, it may be brought orally, which shall be recorded by the people's court and the other party shall be informed.