**Ability hint:**
No one knew that Xuanyuan could infer the shooter's heartbeat rate, the subtle tremor when holding the gun, and even the true emotion at that moment from the rifling scratches on the bullet case. On the battlefield, he is a walking lie detector.
**Cool preview:**
Tonight, he was going to fake military orders in front of the supervising team. Using six bullets, he "accidentally killed" five enemy snipers and one of our own traitors. Just when everyone thought he was about to be dealt with by military law, a sniper bullet accurately exploded the listening device on the battlefield - the first line of the secret letter hidden in the bullet casing had just been revealed.
