When visiting the Computer Museum in Silicon Valley, the first thing I saw was the Chinese abacus from the 1960s, which supported hexadecimal, and then the familiar VAX11 machine. Bosch had the ABS anti-lock braking system in 1978, and Mercedes-Benz used it later. After the IEEE 802.11b standard was established, WiFi routers appeared in the United States in 2000. 2011 was truly the WiFi year in China, and the three major operators focused on the battle for WiFi. In that year, the WiFi usage rate of Chinese smartphone netizens was 14.8% [%].