Very good achievement, thanks to the author for sharing. But at the same time, I also found some small flaws. I found that there seemed to be an invisible wall in front of the trench, and there was a certain distance from the trench. The opponent's shells or bullets hitting the wall would be "stopped", unlike As shown in the author's picture, you can directly hit the "bunker itself", which is a bit fake in effect. I don't know what caused the problem.