MTL - Unemployed at the Beginning, I Let the Singer Come Back - Chapter 478 Aunt Sandwich

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

Linyun, a graduate of the Agricultural College, transmigrated to the world of cultivation in a fit of anger after his graduation project was destroyed.This world is home to cultivators pursuing immortality and mythical beasts capable of stirring the seas.There are also various magical professions.Faced with this wondrous world, Linyun only wants to fully commit to the farming business that he couldn't complete in his past life.At the same time, he wants to see to what extent his past life's farming techniques combined with the cultivation methods of this world can enhance the art of farming.

Many islands dotted the vast oceans of this world. However, some of the islands were a lot more sinister than the rest. Those islands, known as Nightmare Islands, were true nightmares to all but the strongest and most fortunate. Children were kidnapped and thrown on these isolated islands by the Nightmare Palace, forced to sign soul pacts with evil soul pets: Nightmares. These devils slowly devoured the souls of their trainers to grow stronger. If the children did not cultivate fast enough, their souls will be devoured whole, leaving only an empty husk behind.

Chu Mu, the protagonist, was an heir to the Chu Clan, but due to a plotted murder, he was thrown on the island, sentencing him to almost certain death. Dancing on the edge of life and death, he struggled to survive with a small Moonlight Fox he captured. When he finally escaped the devilish foremen on his island, he couldn’t help but let a breath out. But little does he know, the experience was only a beginning to a fated journey with his little Moonlight Fox…

What would you say is the most valuable thing in this world?