Siheyuan: Double Doors at the Beginning, Connecting with the End of the World

Small days discharge nuclear sewage, causing the end of the world. At the critical moment of life and death, Zhang Xiao activates the ultimate home system. Successfully opened the double doors leading to the courtyard. Not only can you enter the courtyard world to take refuge, but you can also return to the original world to fight monsters and upgrade your home. "System mission, kill the deaf old lady!" "Get rewarded - primary physical fitness enhancement." "Get the puppet - the deaf old lady!" "Deaf old lady; necromancer." As long as you kill the mission targets in the courtyard, you can get corresponding rewards. Upgrade your ultimate home to become the only refuge in the apocalypse. "The deaf old lady, Qin Huairu, Yi Zhonghai and all the birds, please wait for me..." This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.