OK, first define something to automatically increase. The "seq" field is what I chose. SEQ chapter1List is used to define a list sequence.
Secondly, I need to find a way to do reference. I select the text needs to be referenced and set it as a Bookmark. When the cross-reference can work.
Word fields are not updated automatically. Use Ctrl+A to select all and F9 is the way to update all fields.