In the Apocalypse, You Have a System and I Have Sweet Potatoes.

In 2035, a strange meteorite rain swept across the world. Spiritual energy revived, monsters ran rampant, and human civilization was on the verge of collapse. Wang Xingguang, an agricultural college student who dropped out of school due to family changes, struggled to survive in the frozen apocalypse by guarding one thousand tons of unsold sweet potatoes in his hometown warehouse. When others were competing for the treasures of heaven and earth, he was chewing roasted sweet potatoes; when the ancient martial arts family showed off their inherited skills, he was practicing the Tai Chi he learned in high school. Until he discovered that his sweet potato leaves that had been irradiated by meteorites could actually make people become immortals? ! So Wang Xingguang embarked on the difficult journey of cultivating immortality.