I'm Doing Management Infrastructure in a Flood Game

When a global flood strikes, everyone starts a raft, and a game interface appears. The only purpose of this game is to survive. Lu Mann has his own business system! Others were still making beds on the ground and quilts on the sky, but Lu Man had already settled in a tent. Others are still living in wooden houses, but Lu Man has already lived in a single apartment. Others were still hungry, but Lu Man had hot meals. Lu Man farmed, opened restaurants and opened hotels in the apocalypse, until he built a huge water city! Find the truth behind the flood apocalypse and save planetary civilization!