First, after opening the QQ chat window, click the emoticon above the input box. After clicking, the expression menu will open. Click the "Settings" icon in the upper right corner of the menu, and then check the "Use Yan characters" option. At this time, put the mouse on the expression to be entered, and the shortcut key of the expression will be displayed. Take the expression "watermelon" as an example, remember this shortcut key.
At this time, enter "/xig" with the keyboard, and you can print the watermelon expression. Other QQ expressions can also be entered according to the previous operation.