Pincer Attack:Repetition

1.Added technology system: you can change the attribute characteristics of the tank.
2.New battlefield: you can win by occupying and also by killing.
3.Grass: grass is added to the map, which can hide the field of view.
4.Improve vision rules: Every tank has vision range.
5.Reformed patrol system: no limit to the number of teams, no patrol failure.
6.Optimized battle experience,matching and settlement rules,newbie experience.