Komatsu is the largest city in Japan, but compared with Tokyo and Osaka, the population is scarce. There are not many people walking on the streets of Gaosongcheng. The hotel we stayed in this time is near Gaosonggang. Every day, visitors can see the blue Inland Sea of Seto. Especially, we can feel the pleasure brought by the small and clean city. One day, we passed the eaves of a family and saw a swallow's nest. Inside, there are three little swallows, a big swallow catching insects for children to eat, a particularly lovely and warm scene, let me particularly like Gaosong.