i think that part of the problem is that zhuang cheng doesn't have enough faith in her. he's worried that if there's even a slight breeze, she'll just fly away from him. i wonder if he had gained the confidence to talk about his insecurities with her, their relationship would've worked out? but then again, this isn't a problem easily solved by just a talk either. neither of them really thought things through, but neither of them are wrong either. so maybe the problem would've persisted regardless if they communicated properly.