Guarding a Whole City with Fireworks, I Am Forgetting the Way I Came

Shen Yanchen died and then came back to life. He was born into the body of a miscellaneous spirit root who was exiled by his clan and was thrown into an abandoned city called Cangwu. He brought memories of another world and a door connecting the two worlds. And a palm soul pattern. Relying on this pattern, he drew a water gathering formation to save the dead well, and used Xuanling technology to forge iron pipes, drones, and psychic puppets. For the first time, mortals had weapons that could penetrate magic shields. Those high-ranking immortal cultivating clans and sects from all over the world discovered for the first time that the ants under the city could bite people. Lin Jiancheng used technology to crush the oppressors, used etiquette and law to rebuild order, and used the two-world passage to connect civilizations. Cangwu has transformed from a ruined city into a beacon, and mortals can finally straighten their backs and say "no" to those who look down on them. But the price is memory. Every time he uses his golden finger, a layer of his memory is taken away. He forgot the faces of his enemies, the names of his companions, and why he came here. In the end, he could hardly remember what the word "go home" meant. He stood under Cangwu's city gate, and the lines on his palms had already circled around his wrists. The city gate is open, smoke rises from the city, and the children are laughing. He forgot who he was. But the city remains. People are still alive.