To put it bluntly, dual power means that the pulsator rotates and the inner tub rotates at the same time when washing clothes, which is opposite to the pulsator. The rotation of the inner barrel is converted by a mechanical device, instead of adding another motor, dual power does not mean that there are two motors. In this way, in theory, the water flow increases the mutual impact force, but in fact, after the clothes are put into the bucket, the two directions of the water flow cancel out and the clothes cannot be turned up. We know that pulsators are cleaned by the rotation of clothes and the friction of water. This kind of water flow has existed abroad for a long time. Imported brand joint ventures, such as Samsung, did this kind of flowing water many years ago, but they all gave up because the actual effect was not very good. The so-called hand rubbing and washboard are just some protrusions on the inner wall of the inner barrel. The promotion of manufacturers does have the concept of hype, and users do not have to pursue it deliberately.