The explanation refers to Jin Wangxiang lying on the ice. Later, because of the "frozen cattail fish" as the code name of filial piety.

Source "Biography of Wang Jinxiang": "Wang Xiangzi stopped the levy and hated people ... Their parents were sick and could not take off their clothes. They had to taste soup and medicine." Mother often wants to eat raw fish, sometimes the fish is cold and frozen. When you undress, you will cut the ice. When the ice suddenly melted, two carp jumped out and went home.

A warm cushion fan pillow, bearing the face and pleasing the knees; ~, cold forest shot. ★ Tombstone of General Tuoba Gui of Zhou Dynasty by Geng Xin in Northern Zhou Dynasty.

story

Filial piety to teachers has always been regarded as the traditional virtue of the Chinese nation. Xu Xun, a Taoist priest in the Eastern Jin Dynasty, Wang Xiang, a mother in the Jin Dynasty, a fairy, and so on. Later, the story of Wang Xiang lying on the ice begging for carp fish evolved into the idiom "Frozen Pu Fish Scared", which is a code for filial piety.

Wang Xiang, also known as Hu Zheng, is an evil man, and he is a filial man. He lost his mother in his early years, and his stepmother Zhu was unkind to him. She said several times that he was bad in front of his father, so he lost his father's love. He was ordered to clean the barn every day. His parents were ill, and he served them naked without complaint.

Once, my stepmother was seriously ill and wanted to use carp as medicine. At that time, it was freezing. Wang Xiang came to the river regardless of the cold, unbuttoned his clothes and begged carp on the ice. At this time, the ice suddenly cracked automatically, a pair of carp jumped out of the river, and Wang Xiang came back with the fish. A piece of filial piety, get what you want.

The villagers were surprised and thought it was because his filial piety touched the sky.