At present, this problem can't be solved temporarily, but there are two ways to provide proof in trademark registration temporarily:

To confirm that your trademark has received the acceptance notice and has not received the rejection notice in the process, you can log on to the trademark website (Trademark Office of the State Administration for Industry and Commerce of China) in official website, and check the application number on your business entity or acceptance notice to check the status. After clicking in, the page can be printed;

please ask the agency (the intellectual property company that handles trademarks) to issue a statement explaining the situation. You have entered the preliminary examination announcement period for 3 months, and if you don't receive any objection within 3 months, your trademark will be issued with a certificate soon (depending on whether you receive the trademark registration certificate about one and a half months after the end of the regional announcement period for 3 months).