Tunnel Survival: Isn't This a Vacation?

Wake up to nine billion people spread out on different roads. There are various tunnels in front of you. In order to survive, you have to break through tunnels and collect materials. Su Yang was forced to participate, but he could see the danger level. "Ding! Tunnel danger level 3" Utilize waste and solve water problems. "Ding! Tunnel danger level 6" A small electric mosquito swatter can easily deal with the aborigines. "Ding! Tunnel danger level???" Explore bravely and get a black tiger cub with explosive combat power. … While everyone was still fighting for food and drink, Su Yang had already started trading and was raising a little black tiger. While he was lamenting the lack of carrying space, Su Yang had gained a large space for movement. When his legs felt tired, Su Yang had upgraded from a bicycle to a RV. Take a bath, barbecue, and plant some vegetables, the life will be so wonderful. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.