The method of completing the infinite main line of flashlight light is as follows:
How to get started: complete Schell's prestige task, unlock the craftsman map, defeat BOSS in the craftsman map and have the opportunity to drop the book of the world. Click on the book of the world in the backpack to trigger the task.
Three stages of chanting: destruction, waving and destruction; Destroy, wave, destroy; Destroy, destroy, destroy.
Note: After the destruction stage, before entering the waving stage, please ensure that you have more than two skill points, otherwise the task may fail.