Looking for a Wife, But It's Sentinel and Guide

The world turned gray for Fang Yan after she turned sixteen, until Xu Yu appeared. The bright moon hangs high, shining on me alone. I'll love you ten thousand times over. [Setting and Content Warnings] 1. A fictional modern military setting, with extensive original worldbuilding. 2. A sentinel with explosive strength and a body that tells the truth × a genius researcher, a sweet dumpling with a black sesame filling, and a guide. 3. Spirit animals: Northeast tiger (sentinel) × snowy owl (guide) 4. The author is stubborn and won't accept writing advice. If this isn't to your taste, feel free to drop it without telling me. Theme: Love makes people brave.