I suspect whatever timeline Shen Wei thought they were on, Zhao Yunlan surprised him by pushing it forward considerably!

I am honestly not sure! I am very likely to have completely missed the hairstyle change if I saw it onscreen because that's the kind of thing I would do. I stopped right after the field trip to the mountains; it was during the period where it was going up and down on Youtube and my Youtube upload disappeared and by the time I found another free upload I had distracted myself.