Of course. The parties may issue a power of attorney signed or sealed by themselves by post. The power of attorney must specify the entrusted matters and authority. At the same time, the agent himself should provide materials to prove his identity, such as close relatives of the parties, lawyers, grassroots legal service workers, etc.

Link to the article: Civil Procedure Law 1. Article 58 The parties and legal representatives may entrust one or two persons as agents ad litem.

The following persons may be entrusted as agents ad litem:

(1) Lawyers and grassroots legal service workers;

(2) Close relatives or staff members of the parties concerned;

(three) citizens recommended by the community, units and relevant social groups where the parties are located.

Article 59? If another person is entrusted to represent the lawsuit, a power of attorney signed or sealed by the client must be submitted to the people's court.

The power of attorney must specify the entrusted matters and authority. An agent ad litem must have the special authorization of the client, and can admit, waive or change the claim, make a settlement, file a counterclaim or appeal on his behalf.

The power of attorney sent or entrusted by China * * and China citizens living abroad must be authenticated by China * * and China's embassy or consulate in that country; If there is no embassy or consulate, it shall be certified by the embassy or consulate of a third country that has diplomatic relations with the people of China, and then by the people of China and the embassy or consulate of China in a third country, or by the local patriotic overseas Chinese delegation.