Walking around Fukuoka downtown, you can get to the entrance of the underground passage. From the entrance, you can go to Tianshen Underground Street. Maybe because of the narrow space in Japan, the underground passage is fully utilized. There are almost all shops on both sides of the Underground Street. There are many small shops selling all kinds of goods, but there are no restaurants, only cafes and snack shops. Wandering in the underground street, I feel time is not easy to grasp.