Forty years ago, Xi'an's Yanta Road, North Courtyard Gate, and bell tower were stunned by the sound of bicycle bells during commuting hours. Tens of thousands of workers rode bicycles in and out of the ten-and-twenty-meter-wide gates of large factories and mining enterprises in the eastern and western suburbs. The spectacular bicycle "torrent" really became a symbol of that era, which was shocking and unforgettable. Bicycles used to be "living props" for marriage and love, "housekeeping treasures" for home ownership, "loading machines" for selling grain and vegetables, and "family fun" for a few people. They were so important and prominent, but in less than 20 years, bicycles were eliminated, abandoned, and left the stage of life. Who would have thought that in the past two years, bicycles have returned to modern life with infinite scenery, "sharing" in street intersections with a fashionable and beautiful appearance. In the 40 years of reform and opening up, bicycles have quietly fallen from the peak of exclusive enjoyment to the bottom, and they have drifted everywhere in style. This emotional landscape has witnessed the development and progress of Chinese society. The flood of bicycles on the streets once, the picture comes from the Internet bicycle used to be the first "three turns and one sound" of the Shaanxi family. Mr. Wang, who is nearly 70 years old, is an old Xi'an person. When recalling his marriage scene, he said that his most "tough" bride price was a 26-type black "Phoenix brand" manganese steel bicycle. People in that era paid attention to "three turns and one sound" in marriage - bicycles, sewing machines, watches, radios, and the first "turn" was the bicycle. Mr. Wang said that this bicycle has accompanied him for more than 20 years, riding it to buy food, buy vegetables, carry gas tanks, and carry his wife and children out to play. The bicycle carried the warm and beautiful memories of the whole family. At that time, the bicycle was a "luxury" for ordinary families in Xi'an. Whoever had a "Flying Pigeon" "Phoenix" "Permanent" brand bicycle would be envied by the neighbors. The bicycle seems to be a symbol of a good family life.