You can go to the China Trademark Network to check. This is the official website and you can use it with confidence.

If you want to register a trademark, you click "Trademark Similar Search" to enter the trademark classification number, search method, and content, and click Automatic Search. If you want to check the status of a trademark, you can click "Trademark Comprehensive Query" and enter the trademark registration number, trademark name, or trademark applicant, and then query. In addition, you can also find a trademark agency to help you search, usually free of charge.

It’s not too troublesome. If you have other questions, you can search “Zhiyi Doctoral Group” to help you check for free.