"Binglaozi" is a unique inherited profession in "Hanyu Town" in the middle and lower reaches of the Songhua River. The core activity scenes are concentrated during the ice-free period from October each year to April of the following year. The duty is not to simply salvage corpses under the ice, but to deal with "frozen corpses" - corpses that are frozen in the ice due to special reasons (such as being obsessed with yellow skins, dying at the "ghost teeth" time, being buried in a cave under the ice, etc.) And causing strange things in the ice and snow. Occupational taboos and rituals: Avoid cutting ice on the day of the "Big Cold", and avoid touching the eyebrows of frozen corpses with iron objects. Before removing the corpse, "three animal offerings" (pork, carp, steamed buns) must be placed on the ice to worship "Grandpa Jiang Shen" and "Lao Ba". "Head"; the ritual of suppressing evil spirits is divided into three levels. For ordinary cold evil spirits, "smoke the body with mugwort + draw talismans with cinnabar"; for evil evil spirits, "immortals can be used to help chant + willow nails to calm the soul"; and for top evil spirits, "the body is sealed with thousand-year-old rosin from Changbai Mountain + talismans are buried under the ice". The professional inheritance items are the "Jujube Ice Hammer" (soaked in the blood of a black dog for a hundred years and can detect evil spirits under the ice) and the "Ice Fishing Handbook").