At the Beginning, Sell Elixir to Zombies

Qi Yang traveled to the world of [Great Wilderness]. As a person without spiritual roots, he became a true disciple of the Immortal Cultivation Sect [Lingyun Sect]. It was like a sheep in the wolf's den. If you don't die today, you will die tomorrow. Fortunately, there is a [Wanjie Shop] software on the mobile phone that travels with me, which can make transactions with all the worlds. Exchange for virus potion in the [Doomsday Wasteland] and start the path of Qi and blood martial arts. Exchanging war pattern technology in [Knight Continent] is enough to strengthen everything in the world. Exchange for top-grade alloys in [Technology City] to create top-grade intelligent magic weapons. ... One day, the immortal came and wanted to unleash the power of thunder and calamity, and wanted to kill the Lingyun Sect. When Qi Yang put up the [Want to Purchase Immortal-killing Weapons] at the [Wanjie Store], applications came in from all over the world. Application from the Magic Continent: "I have an eye of the end. Even if it is a god, as long as it is looked at by him, it will fall into a state of madness and self-destruction until death." Application from the Human Interstellar Empire: "I have an atom disintegrator. Regardless of whether you are a god or an immortal, as long as you have a body, I will decompose everything for you." Application from the prehistoric world: "I have a treasure gourd and a book, both of which can kill immortals. Which one do you want?" Qi Yang: "Then I want them all!"