There will be an area surrounded by squares in the game. There will be a difference in each level of the area. There are brick launchers, push turrets and rotating turrets. Clicking on the brick launcher can launch the green brick directly in front. When the green brick fills the front, the re-launch can push the launcher backwards. Pushing the turret pushes the green bricks and the rotating turret forward, and the rotating turret can rotate the brick launchers muzzle 90 degrees each time. You need to properly control the three turrets, fill the entire area with green bricks, and leave no gaps. The timing and sequence of the turrets is very important, which can have a huge impact on the results. When you successfully fill the entire area, you can pass the customs. You need to observe the distribution of each turret and develop a reasonable launch plan.