Unfortunately, watches sold in China can not be updated to the English language firmware at this time. Watches previously sold in China with Chinese watch interface might receive an option to switch to other languages in 2017.
If you have purchased your watch through an unauthorized source please refer to their return and warranty policies to return the item. We are happy to provide a discount code* to acquire a watch through https://www.amazfit.com which will ship with English firmware, software and support.
*Discount code valid until 5:00 p.m. PST, 12/31/2016.