This means that your patent application has been rejected. This is during the examination procedure, the Patent Office decided to reject the application and informed the applicant in writing that the application still did not conform to the provisions of the Patent Law and its implementing rules. If the applicant refuses to accept the decision of the Patent Office to reject the application, he may, within 3 months from the date of receiving the notice, request a reexamination from the China National Intellectual Property Administration Reexamination Board. The request for reexamination shall be submitted in duplicate, which shall specify the reasons for reexamination, and the reasons for reexamination shall appeal against the matters requested in the rejection decision of the Patent Office, otherwise it will not be accepted. In order to support the reasons for reexamination or eliminate the defects in the application documents, the applicant may attach relevant supporting documents or materials when requesting reexamination, or modify part of the contents involved in the rejection decision. The request for review shall be made by all applicants. The request for review shall also pay the prescribed fee.
So now you need to apply for a review as soon as possible.