These things typically come with menus that are in Chinese

Download the Google Translate app onto your phone or tablet.

Google Translate has a feature where you can point your phone camera at any foreign language text, and it will use text-recognition to identify and translate anything it sees, then superimpose english text over the image, all live in real time. (Pictured: an example of this)

Holding your phone over your monitor, navigate the chinese-language menu until you find the language setting. Change your new screen to English! (or whatever your native language is)