Now you can use ref(label, from: "page") to reference the page number of content, similar to \pageref in LaTeX.
Note that the Chinese supplement for this ref still needs improvement (as shown in the image below where the supplement remains as “page”). Fixing this issue may require more improvements to ref. Related issues include #2485, #5102.
1#set page(numbering: "1")2= Hello <hello>3#ref(<hello>, form: "page")