Raishin Mahhaken

The Raishin Mahhaken (雷震魔破拳, "Lightning Quake Devil Breaking Fist" or "Thundercrack Demonic Shattering Fist") is one of Yang's special attacks, introduced as his first Super Art in the Street Fighter III series.

Appearance	Function	Input
Street Fighter III series	Super Art I	+
Super Street Fighter IV: Arcade Edition	Ultra Combo I	+

Description

Executed by performing two quarter-circle forward motions and pressing punch (in the Street Fighter III series) or all 3 punch buttons (in Super Street Fighter IV), Yang adopts a snake-style kung fu stance ("I'll show you!") then dashing forward with a hand thrust. If this connects, he will twist his hand and swipe it upwards, knocking the opponent up into the air slightly.

What happens next depends on the version. In the Super Art, he will immediately finish the combo by dashing past the opponent with a Tourou Zan movement, hitting multiple pressure points as he does and inflicting sizable damage. This final dash can be compared to the Zan'ei art that his martial arts teacher, Gen, uses.

In the Ultra Combo, he follows the upward swipe with a smaller Tourou Zan that leaves him on the far side of the opponent, then a vertical Tourou Zan, then a jumping, flipping hand slash which hits multiple time, another Tourou Zan which leaves him on the original side that he started on, and finally the dashing pressure point strike from the Super Art version ("Looks like you couldn't avoid that one!"). 

In Fanfiction

In my fanfiction crossover story Street Fighter X Mai-HiME, Yang still uses this as one of his Ultras. And Natsuki Kuga manages to learn this move as of chapter 17 of the said story; the move's animation for Natsuki's Raishin Mahhaken is still the same as Yang's version seen in Super Street Fighter IV: Arcade Edition. Let's not forget this Ultra Combo is Shizuru Fujino's weaknesses.