Siheyuan: My Technology Can Be Upgraded

When Wang Jianjun came to Qingman Courtyard, there was no system, only the fitter foundation left by his father and a "huge sum of money". He knows very well that in this era, the foundation for survival is excellent technology and clean ingredients. He put away his sharp edge and quietly polished his skills in the workshop. When the storm came, he was already an indispensable technical backbone in the factory, calmly watching the "beasts" jumping up and down in their cocoons.