Zhi Xing helps Ding Ding practice her acting by using their experiences to help evoke the feeling when saying the lines. Tang Yu changes upon Tang Xin’s personal posts about her interactions with him over the past 4 four years and realizes how much she must truly feel for him, so he promises to make it up to her. Tang Xin celebrates her birthday with high expectations. (Source: frankly at MyDramaList)