I won't be doing it myself but people can do it themselves by using csv files in streaming assets folder. You will need to open and save document only LibreOffice for Chinese characters. Else it revert them to square boxes.
Install LibreOffice from the internet. After installing open any .csv file. You will see a window with open settings. Just press OK and your screen should look like the image below. Right click on columb B to and select adjust column width. Set it to 10 or 15. Now you can copy text in English column, paste in your translator if you are using one. Then paste the translates text in Others column in same row. Don't mess up with ID column as it's text are used as keywords for game. 