Traveling through the courtyard, doing evil will make you stronger.
Will you convince Qin Huairu and turn Jia Dongxu into a eunuch? The system thinks you have done a great job and will reward you with chemical fiber fabric production technology, which can be used to make bulletproof vests and aviation materials.
You provoked the master-disciple relationship between Yi Zhonghai and Jia Dongxu, and the system rewarded you for your chicken-raising skills. You opened the curtain of modern breeding.