It is an idiom that chickens and dogs hear each other, which means that you can hear chickens barking and dogs barking, which means that the population is dense.
Source: Tao Jin Yuanming: Peach Blossom Garden
Original text: "In the hustle and bustle of traffic, chickens and dogs hear each other. Some men and women dressed like strangers. The yellow hair hangs low and enjoys itself. "
Interpretation: You can hear chickens barking and dogs barking. People come and go in the fields, farming and working, and men and women dress like the world outside the Peach Blossom Garden. Old people and children are very at ease and happy.
Extended data
The Story of Peach Blossom Garden depicts the peaceful, happy, free and equal life of Peach Blossom Garden, and shows the author's ideal of pursuing a better life and his dissatisfaction with real life.
Tao Yuanming writes poems, and is good at sketching. His style is economical and his language is natural. Peach Blossom Garden also has this artistic style. Although it is a fictional fairyland, writing in a virtual scene by using realistic techniques gives people a sense of reality, as if there is a real person. The full text takes the whereabouts of Wuling fishermen as the main line, and describes three stories like novels: fishing in the stream, Taoyuan fairyland and getting lost again.