Introduction to human-dog dialogue: There is a cute little electronic dog called Liangliang in the Haier Science and Technology Museum. We can see it on the big screen. It is very well-behaved and can understand what the lady says. If you can imitate the conductor's voice vividly, then Liangliang can also listen to your command. (Voice recognition and visual recognition systems are used here) We can imagine that one day in the future, there will be an intelligent robot at home that can understand the owner's commands and help us with housework.