From what I’ve gathered, it’s got Projectile Invincibility start-up, certain frames have Mid AND then Low Invincibility, it hits low and it’s pretty safe on block.
Sadly Cheng is still low tier… but lately there have been alot of upcoming Chengs on Supercade I swear.
Captain Corridor (get out the sky)
Lex’s laser droid (it interrupts throws)
Tung’s Muscleman in NGBC (flex for 50+% damage)
Goku’s Spinning kick move in the Super Budoten games (hate that move)
Aska’s Hip Attack. (easy to do, travels far, and safe on block. Dat ass).
1 Frame, invincible, leads to a guaranteed Up Smash for a kill, or a grab to extend the combo. Safe on block. Spikes. Attached to the quickest character in the game.