Cheng Che, an ordinary bookstore owner, once traveled to Thailand with his friend Shen Fuguang, and met the local guide Xu Si. (Xu Si's mother is Chinese, and she took the surname of her mother Xu Ning because Xu Si's father died young.) While traveling in Thailand, Cheng Che gradually fell in love with Xu Si, and their story unfolded from then on.
Intention: pure love