Because millions of users are used to such a combination. Also Ctrl_Shift

Thanks for your response. Alt+Shift and Ctrl+Shift are de facto standard (Linux\Windows way). I used to do it since I was able to use a keyboard. Thant's how hundreds of millions people use it daily. The only exception is MacOS, but even there users use addition software to change the input method to Alt+Shift and Ctrl+Shift. And I really upset what it hasn't done yet, though you promise it many times. https://bbs.deepin.org/post/135320#layout

OK, will improve this.

Alt + shift but just pressing them to shift to other language

Not as present now (pressing super +space) which just shows available layout i choose then i have to press again tp choose the language i want

Just alt+shift (easy for rapid typing), also alt +shift moves to other language not only shows available layout (i insist on this)
Look make it as in ubuntu or Windows, even in ubuntu i can customize it to make one button  

Hello i'm just registered to post a reply.
Last time I installed deepin I was able to switch alt-shift after using some long yet great guides by russian users. Now all of these ways are broken too, I can't even bind random command to alt-shift. Whyy? ;c  Is alt-shift is out of law, and developers force us to use windows8-like switching? I can't understand after hours of trying to get normal switch bind. But all other about deepin is great and very fast compared to many other distros. Thanks!

It's easier than Super-Space

We've implemented, and hopefully we will release an update very soon.