Jiangshi: I Strengthen My Corpses in a Secret Space

After transmigrating into a zombie world, he finds himself facing a female ghost demanding his life from the start.

At this desperate moment, the System activates just in time: he can earn rewards by doing good deeds and accumulating merit.

From then on, he opens granaries to feed the people and builds up his merit.

But he accidentally discovers that evil cultivators are at work, and the mastermind behind it all is actually...