The custom of the Qilidian Nine-bend Yellow River Lantern Festival is spread in the four administrative villages of Majiatai, Qilidian, Lijia and Shuimowan in Ganggou Town, Ledu County, Qinghai Province. There is a Sanguan Temple in Qilidian built in the 36th year of Wanli in the Ming Dynasty (1608). According to the "Xining Prefecture Chronicle", this Sanguan Temple was officially named Cifu Temple. After the temple was built, the Yellow River Lantern Festival began to be held as an important part of the temple fair. During the lantern festival, a stage was set up for opera performances. The full name of the Yellow River Lantern Festival is "Nine-bend Yellow River Lantern Array". Its layout is derived from the Bagua diagram. The main city, moat, alleys, inner city, and ceremonial gate are designed according to the formation of "Taiji produces two yin and yang, two yin and yang produce four images, four images produce eight trigrams, and eight trigrams form nine palaces". There are 16 high poles planted in the lantern city, each of which hangs a high lantern, and at the same time, a divine banner of different colors is hung in different directions of the five directions. The Qilidian Yellow River Lantern Festival is held twice every three years, commonly known as "three years and two ends". The lighting event lasts for three days, starting on the 14th day of the first lunar month and ending on the 16th day of the first lunar month. The lights are lit at 7 pm every night and end at about 11 pm. By then, the entire Yellow River Lantern City is full of light and dazzling, like a sea of lights. Farmers in the Qilidian area also hang various high lanterns and door lanterns in their homes. The flames and the lantern city complement each other, blending into one and illuminating for miles. During every lantern festival, people from all over the country dress up in festive costumes and flock to the venue from all directions, blessing the crowds of visitors. The average number of people watching the lanterns every day is over 10,000.