On this day, 69 years ago, on July 13, 1956 (June 6, 1956 in the lunar calendar), the entire Baocheng Railway was connected. The Baocheng Line was officially opened to traffic to connect the southwest and northwest of the motherland and has a total length of 668 kilometers. A connection ceremony was held at the Huangsha River in Hui County, Gansu Province at 10 a.m. on July 13, 1956. Six persons in charge of the Baocheng Railway Construction Unit nailed the last six special silver-gray spikes into the rails and sleepers at the connection points. At this time, there was the sound of firecrackers, the band played in unison, the float parked at the connection point whistled loudly, and people applauded enthusiastically. Local young vanguard team members and male and female railway workers rushed forward to pay tribute to the representatives of the track laying and bridge workers. Flowers were presented. After the red curtain on the triangular connection sign like a tower was lifted, the painted locomotive gave a long sound and breathed out a wisp of white smoke. It pulled the float and slowly drove past the connection point from south to north. More than 200 local people's deputies sitting in the carriage were all at the window of the car, smiling and waving to the people who were standing in the road and cheering. Then, near the connection point, more than 5,000 railway workers and local farmers held another celebration meeting. Guo Hongtao, deputy director of the Sixth Office of the State Council, attended the connection ceremony and celebration meeting. The Baocheng Railway was built on July 1, 1952 in Chengdu. At the end of 1953, Baoji and Shuangshipu were then divided into three sections: south, north and middle. When construction entered an intensive stage, about half of the labor force of my country's newly built railways and four-fifths of the mechanical road construction force were used. The construction of this railway. It took more than four years; the integration time was more than thirteen months earlier than the date specified in the design documents. Engineers congratulated each other on the rendezvous of trains departing from the north and south sections at the junction point