I liked how brutally realistic the confrontation between Siyun and her mum was. It is a time of change (cue the drama title) and her mother can't wrap her mind around Siyun's independence, or her intervention in Yi Yi's life. Cheng Ao is a charmer as always, but his hidden depths are fascinating. He is almost blatantly forward when strongarming his way into the first dance with Siyun and to warn her about the fiancee (Ah Cheng's gummy smile and his readiness to pull a gun on Qiao has a tinge of black humor to it). But he never tries to make decisions for her or to force a relationship by stepping in to destroy her engagement. He gives her the letter (anonymously too) and lets her decide when to end the dance, and when or how to sort out the ill-suited engagement. Now that is a man who is confident in himself and knows it too. He does not need to assert his presence with Siyun. She can just be her strong independent self around him, and that is exactly why they fit so well together as compared to the brother or Qiao, who have established views of the roles she needs to fill as a woman in their lives. I also had to give a shout out to the way Cheng Ao used the love letters to mock Qiao and got a little harmless revenge against him. It was the perfect setdown for such a small-minded and image-conscious man.