Why is there no China?
Application and version where the issue occurs (e.g. Thunderbird 52.0, Outlook Desktop 2016, Outlook Web)

Expected behavior
have "China" to select
Actual behavior
where there is Taiwan and HongKong but China?
Steps to reproduce the behavior
plz visit below and test https://appsource.microsoft.com/en-us/marketplace/apps?product=office%3boutlook&page=1&src=office&corrid=a873fc30-16b8-4c31-9c7a-c47192050f88&omexanonuid=aafe6fc4-e328-48ea-abc6-53258450a21b&referralurl=&modalAppId=WA104380335&signInModalType=1&ctaType=1
I have no idea why this might be the case. In Partner Center China is selected in the list of markets. There are a lot more regions in that list than there are in the dialog at AppSource so I have the feeling the selections in Partner Center aren't related to what's offered in AppSource. Do you see any other add-ins where China is in the list at AppSource?