He accidentally stumbled upon Dugu Qiubai's tomb - which amazingly still exists after centuries.
A swordsman who claims to be Dugu Qiubai reincarnated taught him DG9J.
He accidentally stumbled upon the descendants of the Giant Condor - and those BIRDS teach him DG9J.
He found it being sold at a bookshop and purchased it.
He met the great great grand disciple of Lady Yang - who taught him DG9J - love at first sight.