The life has been changed a lot for 100 years. In the past, there was no electricity and modern equipment. People had to do everything by themselves without supporting of robots or other advanced machines. The living condition was not good when people don’t have chances to find a good job with a high salary. They almost worked on the farm. For means of transport, they used to ride a bike or bicycle. If they had to go to a far place, coaches was a suitable choice. For education, students had to struggle to find a solution to a difficult problem. If they wanted to get a answer, they might ask directly their teachers. It was really convenient and time-consuming.