还有这种操作
hái yǒu zhè zhǒng cāozuò
This directly translates to: Never thought it could be like this!
This was first used in the field of online games, originating in China's e-sport circles. People playing online games often have some special skills and sometimes they would find some bug in the game and take advantage of it. So when they shared their experience, other “gamers” would be surprised. In a way, this phrase is used to criticize or praise something surprising.
However, the usage of the phrase has gone beyond gaming.
For example, your friend tells you that you can do some illegal as long as you don't get caught. An appropriate reply to that would be: 还有这种操作?