Cosmic Trading System - Chapter 49 - : Revenge Once Again

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!

- Description from Novelupdates

[You have transmigrated, named Gu Sheng, and are a farm boy.][This is a dynasty in chaos, where demons and monsters lurk and bandits run rampant; as someone at the bottom, you face hellish survival difficulties.][You decide to lay low.][You awaken a mastery panel.][You breathe a sigh of relief, you can start grinding.][You grind Chopping Wood to Perfect, chopping bones and breaking tendons with ease.][You grind archery to Perfect, becoming a godlike archer who can hit a louse at a hundred paces.][You learn the Iron Stone Fist, set foot on the path of a Martial Artist, and grind it to Perfect, with punches as heavy as a million pounds.]……[You learn the Longevity Eternal Youth True Art, greatly extending your lifespan, giving you more time to grind, and greater hope to lay low.]……[You grind to the limit, steadily laying low, and one day you suddenly realize, you are invincible.]

[Apocalypse] + [Rebirth] + [Hoarding Supplies] + [Surviving] + [Infinite Space] + [Dark Revenge & Non-Saintly]The world enters an Ice Age, ushering in an icy apocalypse where 95% of humanity perishes! In his past life, Zhang Yi was killed by those he had kindly helped, due to his benevolent nature. Reborn a month before the ice apocalypse, Zhang Yi awakens a spatial ability and begins to hoard supplies frenetically! Running out of supplies? He empties the warehouse of a super-mall worth billions! Uncomfortable living conditions? He constructs a super-secure dwelling comparable to a post-apocalyptic fortress! As the apocalypse arrives, while others freeze like dogs and would abandon anything for a bite to eat, Zhang Yi lives even more comfortably than before the apocalypse.Green Tea b**ch: “Zhang Yi, let me into your house, and I promise to be your girlfriend.”Rich Second Generation: “Zhang Yi, I’m willing to trade all my wealth for a meal at your place!”Beastly Neighbors: “Zhang Yi, you should share your supplies with us, don’t be so selfish!”……Watching these people who betrayed him in his past life, Zhang Yi lies comfortably in his safe house, living a carefree life as if in a paradise.Zhang Yi: “Why should I care whether you live or die? I would rather feed my things to the dogs than give them to you!”

Yao Tang, the daughter of the Yao family who mistakenly exchanged at birth, was finally found.