The Bamboo Horse Falls into the Sky - Season 1 Episode 18
Overview: After Su ranran know the truth, Zhuang Xu and Xu Qiheng really worried about Su ranran. They followed and protected her secretly. In the end, su ranran know that Zhuang Xu and Xu Qiheng followed her every day. She also decided to forgive Zhuang Xu and Xu Qiheng.