How to do a palm strike? (Sifu)

You need to press the combination W, S, left mouse button, but you need to press the combination quickly, just like in Mortal Kombat.
Personally, I play arrows, not wasd, and my combo looks like up, down, left click

Marik0n
It is necessary to press consistently and quickly. And immeno FORWARD - BACK - HEAVY or LIGHT ATTACK. You don't have to press at the same time.