What should I do if I forget my patent subsidy online application number?

This has nothing to do with it. . . You should know the name of the patent applicant. . . . You can go to the China Intellectual Property Office to check. . . I can't post the URL here. . . Baidu China Intellectual Property Office, there is a search on the right. . . Click in. . Just enter the applicant's name in the corresponding column and you can check it. . .