Using Classic Outlook on Windows for personal email, calendar, and contact management
We are experiencing the same issue with Chinese characters with users of Office 2016 Home and Business version 1806 (Build 10228.20134).
Further investigation revealed the client sending emails was using the following keyboard characters [ :-) :) :/ :P ] to create emoticons. Which appears to be a bug in the creation of the emoticons code converting them to Chinese. We have requested staff to refrain from using the following :-) :) :/ :P... while communicating with clients or other staff members.