Introduction Ihaveworkedonhigh-energyhadronphysics,particularlyspinphysics,basedontheperturbativeQCDtechnique. Thesingletransverse-spinasymmetry(SSA)hasbeenalongstandingmysteryfor40yearssincethefirstobservation. MuchtheoreticalandexperimentalefforthavebeendevotedtounderstandtheoriginoftheSSAandthisstudywill continuetonextgenerationexperimentlikeElectron-Ion-Collider. IhavedevelopedanewQCD-basedframeworktosolvethe40-yearsmysteryinhigh-energyhadronphysics.