I'm the Trap God: Your Abyss, My Pit

It's hard to get by in the real world, and there are pitfalls everywhere. Orphan Xu Yiming was abandoned as a child, had someone else take his place in the college entrance exam, and, after moving to the city, barely managed to earn some money as a delivery driver. Then a beautiful landlady talked him into an investment that cost him every penny. When he tried to return to the countryside, he fell into a roadside pit and died.

After transmigrating to another world, he gains the "Get Stronger by Digging Pits System." Dig a pit for an enemy and learn their skills. Dig one for the protagonist and gain peerless martial arts. Dig one for a beauty and be rewarded with a boost to your cultivation. Dig one for your own people, and the deeper the pit, the more resources you get. You can even make the people you trick into your underlings. This System is amazing! From then on, I'm the God of Pits, roaming freely through the Myriad Worlds by digging pits.