In the 1940s and 1950s, residents could only walk out of the house to enjoy the cool. In the 1960s, on the pavements were people enjoying the cool. Hu Ying still remembers the tense atmosphere when he listened to stories in his childhood. In the 1970s, more and more people gathered in the alleys and pavements to enjoy the cool. Wang Qihui still remembered the nursery rhymes in his childhood.