In my opinion, I think he would retired still because he would have suffered a blow in motivation. Plus, he's getting older and older, after losing at 32 years old, he probably would lose all his motivation and retire regretfully. Both were surprised. Shaotian was really excited as he is very grateful to Weichen and addresses Weichen respectfully when they meet again. Yu Wenzhou merely greeted Weichen in respect but it was more like a courtesy since Weichen was former Blue Rain Captain. Nope, they didn't feel betrayed. They just felt surprised since Weichen is considered really old.