On July 14 and 15 of the lunar calendar, there is a custom of offering sacrifices to river gods (putting grapefruit lights into the river at night), and the ceremony lasts about 2-3 hours.
In order to worship the river god, the local people made a beautifully decorated hut with wooden boards, which was two meters long, more than one meter wide and one meter high. Insert candles and things like that in a small paper house. Then string the grapefruit with a rope, and arrange them in two strings tens of meters long. Insert candles, incense and paper flags on the cut grapefruit to make it float on the water. When swimming, several young people with excellent water quality pushed a small paper house and dragged two long strings of grapefruit lamps, each wearing a grapefruit on each foot. It gets dark at night, and the grapefruit lamp is pulled from downstream to upstream, and then from upstream to downstream. It took about an hour before the activity ended.
The activity of lighting grapefruit lanterns will not be over until it is held for two consecutive nights. This folk activity has never stopped for thousands of years.