Shadow Crane Strike
From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Gohan performs a crane pose and folds his arms across his chest. He then launches a Ki Blast from his right hand.
Gohan used this attack against Goku during a sparring session in Dragonball: Evolution. He mentioned that Goku had so far been caught off-guard by the technique every time. Goku later used it himself while fighting against Roshi, only for Roshi to avoid the blast with no difficulty and for the blast to hit Bulma Briefs instead.