Siheyuan: There Are Black Technologies to Attack People

Lin Chen, a senior engineer, traveled to the world of "Sentiment Courtyard" filled with animals with the system to defeat people, and became a repairman in a steel rolling mill. Facing the animals in the quadrangle who were almost inhuman, Lin Chen went all out - whoever dared to make a mistake, he would defeat them all! Moreover, Lin Chen can earn black technology points by insulting others, which can be redeemed for various technological products. The repairman rubs the laser cutting machine tool with his hands, shocking the leaders! Color TV was invented decades in advance, with a production line attached! Starting from a repairman, let Longguo's technology lead the world!