Fellow students are:
In order to provide you a smoother viewing experience, we have migrated servers, welcome update experience duck ~
[] Version upgrade notification
old version will no longer be available in late July, so please update duck as soon as possible!
[Description] video buffer
due to migration of the servers, so after we updated the new version, previously cached data will be lost in the course of the APP, need to re-cache Oh!
Step: please everyone in my order - to view the purchase of course - Cache
[Customer support]
have any questions, please consult the College customer service team.
QQ Service: 800 180 106