Dark and Light - upcoming sandbox developed by Snail Games. Not much real information gameplay, CBT start on June 20th and Steam account required to sign up.
Dark and Light - Global CBT Sign-Up Now Open
Except Dark and Light Snail Games also developing Age of Wuxia 2. It a very similar game just with a bit different graphic.

Sign up here: https://zh.surveymonkey.com/r/DNLtestsurvey
Be sure to use real steam ID.

Sign-up will be open from now until next Thursday, 6/15 at 11:59PM PST, and the closed beta itself will start on Tuesday, 6/20. Slots for this CBT are limited, so sign up now!

Trailer
More Information
Official Facebook Page