1. First, search for the keyword Chongqing Primary and Secondary School Mathematics Library in Baidu, and click the link in the search results to enter the library official website.

2. Wait to enter the official website homepage of the digital library.

3. Then in the upper left corner of the page, click the login option to start logging in to the personal digital library.

4. On the login page, enter the personal account number and password of the library provided by the school.

5. After filling in the account information, click Login.

6. After logging in successfully, you can view the reading tasks published by the school grade on the page, and click Start Reading.