This puzzle is a rebus - one of the squares requires more than one letter. To enter more than one letter, select the square and hit 'esc' if you're on the computer, or the three dots in the corner if you're on a phone.
Thank you for solving, and for such a nice comment! Fall is upon us, which (in my opinion) is the best time to be in CNY so I am feeling the CNY vibes strongly these days :-)