When they were three years old, they met each other for the first time, and they promised each other for life; when they were ten years old, they looked back at each other charmingly, but she had forgotten them; when they were twelve years old, they met on the battlefield, and she was dressed in men's clothes, but his heart was inexplicably missing; when they were fifteen years old, they were wrapped in red makeup, and from then on, he doted on her to the core.