The Mortal Farmer's Godly Gourd

Caleb falls into a cavern, encounters a cultivator, and is implanted with a fiendish mark that flares up every seven days. He obtains an immortal gourd with spirit liquid that revives plants. He escapes to Benevolence Hall in Blackrock Town for treatment. He plans to use the gourd to grow Violet Spirit Ginseng from the Ghost Market, sell herbs for treatment, and begin farming and alchemy.