1. Enter Alibaba Cloud – Domain Console
Quick access page: https://dc.console.aliyun.com/next/index#/overview

2. Choice: Analysis

3. Click: Add analysis

4. After filling in the analysis information, click: OK
The specific added content shall be subject to the information of sslsky order.
The following reference graph record type: came

The following reference map record types: CNAME

CA will check the record regularly. After adding the record, verification will be automatically completed after it takes effect.
You can check whether the resolution is effective by : http://dnschecker.org/#CNAME/
For example, the following figure:
