How Many Cities Does Your Family Have?

One ordinary afternoon, Nan Sanning woke up again and found himself on a weird and magical bus. After chatting with the passengers, she learned that this car could actually travel through the time tunnel to another world! What kind of world is that? She decided to explore with a few people she met on the road. She got out of the car and realized that this continent might be a mobile town on the sea, but why was everything in front of her so familiar? It seemed as if it had already appeared thousands of times in her life. What's even stranger is that dad is here too, and he is the owner of this whale boat!