Chinese script is a bad fit for any non-Sinitic language. The languages that did adopt the script (mostly Japanese, Korean and Vietnamese) all went through a phase where Chinese was the only literary standard and as a result they also borrowed large amounts of Sino-Xenic vocabulary together with the writing system.
This got me curious about whether Mongolian has enough Chinese loanwords that it could be written in a mixture of Chinese characters and phonetic script (similar to Japanese). That question led me to this article on the difference between Sino-Xenic and other borrowings from Chinese, using Mongolian as an example: http://www.cjvlang.com/Spicks/sinoxenic.html#nonsinoxenic It mentions in passing that some people in Inner Mongolia do mix Chinese and Mongolian scripts in informal writing.
This got me curious about whether Mongolian has enough Chinese loanwords that it could be written in a mixture of Chinese characters and phonetic script (similar to Japanese). That question led me to this article on the difference between Sino-Xenic and other borrowings from Chinese, using Mongolian as an example: http://www.cjvlang.com/Spicks/sinoxenic.html#nonsinoxenic It mentions in passing that some people in Inner Mongolia do mix Chinese and Mongolian scripts in informal writing.