God-level zombie synthesis system of the end of the world

Travel through the apocalypse and get a zombie synthesis system. Two level 1 zombies can be combined into level 2 zombies, and the combined zombies are [-]% loyal. The higher the level of the zombie, the higher the appearance. Zombies have exclusive skills, the Fist of Heaven and Earth, and the Three Ghost Swords that kills. Zombies will also produce zombie treasure chests every day, which can be opened to good treasures. After Ye Li had a super synthesis system, he started to synthesize zombies crazily in the last days. The system is in hand, I have the world. Doomsday, tremble! My leaves are here!

Key words of the novel: No pop-up window, God-level zombie synthesis system of the end of the world.