(Who would have thought that the smart home mansion that Bill Gates spent 97 million US dollars to build has become a commoner in just a few years. Now, ordinary people can use mobile phones to command the residence, and services such as laundry, cooking, and taking care of children and elders are readily available. Experts said that with the widespread promotion of the mobile Internet of Things, it will not only upgrade the smart home technology, but also broaden the application business, which will have great prospects in the future.)