Male protagonist, a soldier in his early twenties from the provincial capital. He is on leave visiting a friend. He helped Lin Yuxi after her injury and they were accidentally locked in the clinic examination room overnight. He gave Lin Yuxi forty yuan to protect herself. He strongly suspects Lin Yuxi is his biological sister based on her birthday matching his sister Zhuyue's birthday and her birth at Jiangcheng County Hospital. He is compassionate, protective, and determined to uncover the truth and bring her back once he returns.
