The two-month summer vacation passed quickly. In the week before school started, Jiang Changhai's family sent Zhiwen, Zhiwu, and Laidi off on a train back to Yang City.
After school started, Jiang Mianmian was just as busy as before. Although the production cost of the second-generation machine had successfully been reduced, she still had many other research projects on her hands, and Yu Cheng would accompany her to the institute for meals whenever he had the time.
A semester flew by in the blink of an eye, and just two weeks before the New Year, Yu Cheng returned to Stone Bridge Village with the Jiang family.
When they reached Yang City, a car sent by Yu Cheng's friend was already waiting outside.
As soon as their car entered the village, it attracted the villagers' attention.
