Unstable. It is only the first step for college students to join the party by letter. It is possible to write a letter to join the party in the university. When college students apply to join the Party, the Party organizations will conduct inspection and training to solicit opinions from the masses. Only when he basically meets the requirements of party member will he send a letter to learn about his experience and family and social relations. If there are no problems, he can develop. Sending a letter is usually the first step in development.