Tears of No Regret

Sun Wu Kong, who began fighting and defeated Buddha, was actually bewitched by the wraiths, and Tang San Zang suffered a disaster! At a critical juncture, Sun Wu Kong pulled out the source of the spirit of resentment but found that she was a goddess of heaven and earth who had a fate of three hundred years with her-"Lucky Star"! In order to find out the reason for the "lucky star" blackening and save Tang San Zang, Sun Wu Kong embarked on a journey back to the past but finally shed a tear. Why do the tears of the Great Saint flow, and for whom?
(source : mydramalist)