How to level the ground?

The simplest leveling method is to put a horizontal line first. As long as Mo Dou is added to the plastic horizontal pipe, it can be used by masons and carpenters. After leveling around the line, scrape it with a 2-meter-long scraper. Better level the floor. According to the line, start from the highest point, add pads to the lower point, and lay the keel to lay the floor. Check and adjust with a level when laying.