What do you mean by "land use"?

Generally speaking, all the general books were used by local kings on18th day before the establishment of the Fourth National Congress, and even the Qin Ding Hee Sa Flat Book compiled by Emperor Qianlong according to the imperial edict is still in use. This is not correct. It's 360 degrees on Sunday, and it's divided equally among the five elements, 72 degrees each. Seventy-two degrees in beginning of spring belong to wood, seventy-two degrees in long summer belong to fire, seventy-two degrees in beginning of autumn belong to gold, and seventy-two degrees in beginning of winter belong to water, so the last eighteen degrees in each season are used by the king of soil. The orbit of the earth's revolution is not circular, and the gravity of the moon and other planets causes the speed of the earth's revolution to change constantly, so it is the most scientific to use the longitude of the sun as the calendar division, such as the twenty-four solar terms. Therefore, Tuwang should take the first ten octaves of the four stands as the calculation standard.