Turtle Son-In-Law Counterattack

I'm not a pervert, but the system forces me to do it. The protagonist has obtained the Yu Gong System, which allows him to produce goods on a large scale. He only needs to cultivate with all kinds of girls in reality. This system is a bit cumbersome... The protagonist, Ye Chen, has become the lowest form of a son-in-law. He is responsible for cultivating the daughter of the Yao family and giving birth to children every day. However, there are also Lao Wang, Lao Zhang and Lao Li with him. The son-in-law has no dignity, so he decides to use the system to overthrow everything. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.