For Yu Nuo, Beizheng's appearance was his salvation. It was Beizheng who took him out of the darkness and taught him what love is.
For Beizheng, Yu Nuo is the beacon of his return. He has been unrequitedly in love with Yu Nuo for three years because of a photo, and he has found himself because of Yu Nuo.
Concept: Redemption among teenagers