Farming My Way to Immortality, Starting with Meeting a Demoness

Jiang Mu transmigrates to the Spiritwood Continent and binds himself to the Longevity Dao Seed System!

He only wants to farm for ten thousand years before venturing out, but his special constitution catches the eye of Jiang Mengli, a temptress from the Hehuan Sect. She forcibly takes him in as her kept man, making him her personal cultivation furnace.

To farm in peace, Jiang Mu has no choice but to play along, trading his "services" for resources: three minutes per session, in exchange for a single blade of grass.

He plants spirit herbs every day, stealing their lifespans to cultivate. By using their lifespans to make deductions, he gradually upgrades his basic cultivation techniques into divine arts that reach the heavens. His farming tools are constantly upgraded, too, until they become divine weapons...

Years later, with a great calamity approaching and the gods falling one by one, Jiang Mu looks up from his fields and subdues the heavens with one hand. Only then does Jiang Mengli finally realize that the man she kept is actually the God of Farming.