Kobokushi

The Kobokushi (虎撲子, "Tiger Beating Child"), commonly known as Palm Strike, is one of Yun's special attacks, introduced in the Street Fighter III series.

Description
Executed by performing a quarter-circle backward motion and pressing punch, the attack is a simple two-handed pushing motion strike at around the level of Yun's abdomen. Similar to Yang's Byakko Soushouda, but with a shorter range, the speed and damage are determined by the punch button used; light punch has the fastest execution and weakest damage, heavy punch has the slowest execution and the strongest damage, and medium punch is halfway between the two.

Street Fighter III series
Kobokushi is one of the few moves in game with no EX version. Instead, using more than one punch button will perform a feint; Yun will draw back as if to perform the attack but does not. This is useful in baiting pre-emptive attacks or parries, as Yun can suddenly perform an unexpected attack.

Super Street Fighter IV: Arcade Edition
The feint is now mapped to the light punch button, while the medium punch and heavy punch perform as usual, and are capable of stopping fireballs. Arcade Edition also adds an EX Special version, which causes an opponent hit by it to be knocked against the edge of the screen and bounce off it, allowing for juggles.

Tactics
Kobokushi is often pre-empted by an opponent's attack, due to the long startup. However, when timed correctly, the attack is extremely powerful, and its hitbox is such that it will hit an opponent who is performing a usually unassailable move.

Etymology
The name is based on some of the idioms revolving around tigers and lions.