Double Realm: Be a Cow and Horse in Another World and Enjoy Happiness in the City

Also known as: "A submissive person in a different world, a tyrant in the city" Double wear + (alien black technology, city) + cool writing, no abuse of the master, fun all the way to the end. The protagonist obtains a different space and can travel between the city and the different world. There are many alien black technologies in the other world, such as rebirth of severed limbs and genetic enhancement. I don't deserve to be rich. Mai Feng began to use alien technology to rise in the city and control the wealth and structure...