In WPS Office, turning two pages into one page is usually for the convenience of reading or editing documents. You can follow these steps:

Open your document and select the document to operate in WPS Office.

Go to View Tab: In the top menu bar of WPS Office, find the View Tab and click it.

Switch to page layout view: in the view tab, you will see page layout or similar options, click it. This will switch the view of the document.

Scale: After switching to print layout view, you can use the scale option on the toolbar to scale the document. Generally, you can select the options of "1 page and 2 pages" or "2 pages and 1 page" to control two pages to be displayed as one page or one page to be displayed as two pages.

Resize pages (optional): If you want to resize each page to fit a single page, click the Page Size option under Page Layout view, and then select the desired page size.

See the effect: after completing the above steps, you will see the document displayed from two pages to one page, or vice versa, depending on your choice.

Please note that different versions of WPS Office may have different interfaces and options. The above steps are general guidelines and may need to be fine-tuned according to the specific version you are using.