The advantage is that it has excellent obstacle avoidance capabilities without cleaning, but the disadvantage is that the module needs to be replaced manually every time. The Mijia no-wash automatic water-adding robot has sufficient suction and excellent obstacle avoidance capabilities. The machine can meet daily human cleaning needs and can clean dust, paper scraps, Mijia no-wash rice grains, rice porridge, coffee and other dry items. The disadvantage of wet garbage is that the module needs to be replaced manually every time, which takes some time every time it is used. A robot is a machine, especially one that is programmable by a computer and can automatically perform a series of complex actions. The robot can be guided by an external control device, or the control can be embedded in it.