trajectory of gunfir

Wang Zhong discovered that there were two small windows against the wall he was leaning on, at a higher place, sunlight slanted in.,The next moment, Wang Zhong saw the source of the vibration and roar - the tracks.,Wang Zhong thought, "What can I possibly say I've only ever commanded troops in the game. I'm a complete outsider. Besides nodding, I don't seem to be able to do anything else."。