foreword
If a worker wants to do a good job, he must first sharpen his tools. When developing a project, we need to adjust the relevant system settings to the configuration we are used to, and configure all the tools related to the project to improve the efficiency of our development. The same is true for input methods.
Specific steps
The first step is to click the menu in the lower left corner to open the settings.
The second step is to select "Region and Language", click the "+" of the input source, and a list of the desired languages will be displayed, click "Chinese".
The third step is to select one of the Wubi input methods, here I choose Jidian Wubi, and then click Add.
After the addition is complete, you can adjust the input method on the Ubuntu main interface.
postscript
The main reason is that sometimes it is inconvenient to use without switching the input method, and it is very awkward when searching for something. It's not very useful, but thinking that I might use it in the future, I'd better record it here, so as not to forget how to set it later and search hard.