On the Eve of My Wedding, I Was Surviving by Selling Rags

I spent three days saying goodbye to my gloomy life peacefully. When I open my eyes again, I have to learn how to live in a family of cultivators. I became the eldest son of the Xia Chaolin family, a legitimate son who was enthusiastically "cared for" by the family brothers, a groom who was forced to marry a woman from a strange clan, and a time-traveler who was bound to the "buy anything and sell everything system" but was extremely poor. I took a look at the starting products: [Cold Meat Buns], [Rusty Hatchet], [Blood Boosting Powder]... Let's look at what I faced: the evil hands of my family brothers, a dead bald donkey who kept shouting about the "destiny" between Buddha and me every day, the invasion of monsters... I was silent for a moment and clicked on the "Buy" option. I am Lin Che, a time traveler who has "died" once, and a "businessman" who uses the system to price everything. I want to use this special store to make the biggest deal with this unfair world and this cannibal family: use your rules to buy out my future. [Everything has a price, including destiny]