Legal basis: Article 52 of the Civil Procedure Law of People's Republic of China (PRC), if one or both parties have the same object of action or the same object of action, and the people's court thinks that the trial can be combined with the consent of the parties, it is a * * * lawsuit. * * * If one party to the same lawsuit has the same rights and obligations with respect to the subject matter of the lawsuit, the litigation behavior of one party is recognized by other * * * co-litigants, and becomes effective for other * * * co-litigants; If there are no * * * same rights and obligations on the subject matter of litigation, one of the litigants' actions will not be effective for other litigants with the same * * *.