The way you do it is to draw a box (press “M” for the Rectangle Tool), and select it. Now take your rotated image (I usually Ctrl-x cut it so it’s on the clipboard) and Paste Into (Alt+Ctrl+V, this command is on the Edit tab).
That’s it. Now all you have to do is reposition the rectangle where you want it, and adjust the visible part of your image using the Direct Selection Tool (Ctrl+A, the white arrow).
In Chinese, the Edit tab is 编辑 and Paste Into is 贴入内部.