legal ground
Article 58 of the Civil Procedure Law
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.
Article 60
Where the authority of an agent ad litem is changed or revoked, the parties shall notify the people's court in writing, and the people's court shall notify the other party.