The patent is being withdrawn. Do I need to wait for the withdrawal before submitting a new application, or can I submit it now?

If the previous application is not public, you can apply at any time. If the previous application has been made public, or the establishment has been made public, it is meaningless to apply again. If it is an invention patent, it is best to call China National Intellectual Property Administration to confirm whether it has entered the stage of preparation for publicity.