Sanyuan County is located in Longqiao Town. By the end of the Qing Dynasty, "the market was extremely prosperous, and merchants from all over the country valued business but didn't know about trade". Salt industry and trade in tea, cloth, silk and medicinal materials were the main products, including rice and wheat market, donkey and horse market, pig and sheep market, silk market, paper flower market, salt jujube market, iron market, handkerchief market, paper market and medicinal materials market.
Li Ming and Wei Zhen's "Inscription on the Dragon Bridge Made by Wen Gongyi" records: "The western part of Shaanxi is called Zhuangxian Sanyuan, which is the heaviest. Woye is thousands of miles away, salty? Gaoru Jia people, full of fruit and cloth, are angry with each other and face Taicang. If you can spare money to Sifang town, they will not talk until they are 20 years old. If the quartet stumbles, it will really cover the Sanqin Metropolis. "
The local annual Laba Festival is known as "the largest collection in Guanzhong" and enjoys a good reputation in North China. Sanyuan Laba Festival is located outside the Kansai Hutong in Sanyuan South, covering an area of 300 mu, and lasts for half a month from the eighth day of the twelfth lunar month to the twenty-third of the twelfth lunar month. The venue has its own streets and alleys, and tents are set up according to the industry. It is the largest livestock trading market in the province.
During the grand event, more than 1,000 horses from Ning, Qing and Meng's states are on the market every day. Altars, pots, cups, plates and bowls in Yaozhou, North Road; Green salt, woolen cloth, medicinal materials and leather goods shipped by camel teams from Xinjiang, Qinghai and Gansu; The mainland supplies tea, silk and department stores to the border areas. Mountain products, a dried fruit of Hokuriku, has all kinds of snacks.
At the meeting place, tourists from far and near were surrounded by clouds and fog, which was very lively. The two major dramas at the North-South Sub-venue competed for each other, and the audience was crowded and cheered. Henan Circus, Hebei's "Drum Tower Pole", artists, storytellers, singers, foreign films, antique calligraphy and painting booths, applause and cheers came one after another. Divination, gambling and lottery are mixed among them.
At the end of the Qing Dynasty, there was a poem praising the three principles of Laba Festival, which said, "I can't open my eyes in the face of dust, and ladies from all directions are like the wind." Driving cattle and wagons, it traveled all over South Taiwan Province and North Taiwan Province. Where to ask about prosperity, each boasted in front of the martial arts school. The childe travels like a brocade, and the beauty is like a flower. "And the Tao is exhausted."