A Billion Dollar Exchange - Chapter 19: Cramps

At a low point in his life, Xia Ruofei discovered that a scroll that was passed down in his family had a hidden secret: it contained its own independent world.

In the space, there was a spiritual pond that enhanced the growth of plants. There were mysterious spiritual flowers that could cure illnesses. Time in the independent world flowed at a pace ten times that of the outside world. Everything he planted there was of supreme grade and grew at a rapid pace. Everything he raised gained sentience.

From that day forth, Xia Ruofei began a different, brilliant life of planting succulent plants and vegetables, raising animals and flirting with beauties.

Chen Shiping, a Qi training monk from the Foundation Establishment family, is struggling in the world of cultivating immortals

- Description from novelbuddy

The 27-year-old Wei Han is a slightly fat, slightly chicken-livered, and slightly foolish, pure-hearted and besotted top, and his sweetheart who had been together with him for seven years, in the end, was stolen away by Qi ZhiFan one morning.
Deeply broken-hearted and in despair, he went overboard with binge eating, and ended up pathetically choking to death…

The strongest Demon Lord dies, and reincarnates as a human. Not only that, he because of various incidents turns into the hero’s best friend.

Follow his journey as he tries to help the hero escape his fate, and on the sideline to conquer the continent while he’s at it.