Reconciliation after a breakup + Adorable baby + Strong protagonists + Military marriage in a historical period + Scientific research powerhouse

Four years have passed. Gu Beichen's wife ran off with someone else, and he has turned himself into a human blade living only for his missions.

Until he took on the task of protecting the female translator, Gu Yun.

He shielded her from a bullet, only to be told in return: "Please have some self-respect!"

What's with all this talk about self-respect? He's about to lose his wife, what's the point of him having any self-respect?!