After receiving the short message, China National Intellectual Property Administration issued a notice of patent substitution, but I don't know where to check it in the cpc client.

I don't know whether your patent is directly submitted to the State Information Bureau through the CPC client or entrusted to an agency.

If the entrusted agency applies, it shall send a notice of correction to the agency. First of all, you need to find an agency to understand the situation.

If you have an account, you should submit it by yourself through the cpc client. First, you should open the cpc client to receive (check) the file returned by the National Information Bureau, which contains the correction notice file, and you can open it directly.