Sheng Ze Xi is the male protagonist, a battalion‑level commander in the Northwest Military Region. He is tall, handsome, with distinct features, dark eyes, a sharp jawline, and a lazy, sarcastic demeanor. He lost his mother at thirteen and has a strained relationship with his father, stepmother, and half‑siblings. Five years ago he was injured in battle, leaving him with only a 1% chance of fathering a child. Despite this, he is deeply in love with Gu Jia Ning and sends a matchmaker to propose. He is possessive and jealous of Wen Zhuqing but respects Gu Jia Ning's choices. He is thoughtful, remembering her menstrual cycle and bringing her painkillers and sweet wine poached eggs. He conceals nothing during the blind date and marries her as soon as possible. He swears loyalty under the red flag and intends to protect her from his own family.
