No. 1 Landmark (2010)

Original title: 零号国境线

Set in the border town of Zhidian, the story follows Yue Feng, a tech-savvy post-80s internet expert who accidentally gets entangled in a deadly conflict between drug lord Shali and anti-narcotics officer Ruan Linghao after uncovering access to illegal gambling funds. To protect his father from criminal retaliation, Yue Feng joins the army and is sent to the border, where he endures harsh training, meets Li Jia, and ultimately becomes Ruan Linghao’s subordinate through real combat experience.