You can enter HowNet by registering and logging in the library of Guangxi Zhuang Autonomous Region, and use it for free. The specific steps are as follows:

1. Go to official website of Guangxi Zhuang Autonomous Region Library and find the "Register" option, as shown in the figure.

2. After successful registration, return to the home page, enter the account password, and click Login, as shown in the figure.

3. After that, enter the content of the paper you want to query on the homepage, and then click "Search", as shown in the figure.

4. Click on the paper you want to read in the retrieval interface, and click Enter, as shown in the figure.

6. Then select "PDF Download" in the details interface to download for free viewing, as shown in the figure.

Precautions:

You must enter the HowNet system through official website, Guangxi Zhuang Autonomous Region to realize free use, otherwise you can't use it for free.