I Opened a Black Market in Another World

In the twilight of a dynasty, the court is in chaos, officials are corrupt, the martial arts world is in disarray, powerful clans have risen to power, natural disasters are frequent, evil spirits abound, and the common people struggle to survive. Lin Yuan, now in his sixties, transmigrates to this world. How will he use the black market system to survive in this chaotic era? How will he weave a black market network to influence the entire world, even breaking free from constraints and reshaping the world?