Mobile phones, called mobile phones or wireless phones, are usually called mobile phones. At first, they were just a communication tool. In the early days, it was also commonly known as mobile phone. They are portable telephone terminals that can be widely used. They were originally developed from 1940 battlefield mobile phones manufactured by Bell Laboratories. Smart phones, like personal computers, have independent operating systems, most of which are large-screen machines, touch capacitive screens, and some are resistive screens, which are powerful and practical. Users can install programs provided by third-party service providers, including games, and continuously expand the functions of mobile phones through such programs.

Exercise is a Chinese vocabulary, pronounced duàn liàn, which is defined as physical activity that uses planned, structured and repeated physical activities to improve the health of one or more body parts. Make the body strong through exercise, cultivate courage, wit, safeguard collective interests and other virtues.