Northern people in the "February 2" dragon head day, every family cooking pig head, because the first day, fifteen are over, "February 2" is the last festival in the Spring Festival. Generally farmers are busy with a year of hard work, to the 23rd of Lunar New Year to kill pigs and slaughter sheep, the first month, Lunar New Year to kill the pork is basically eaten up, the last remaining a pig's head, can only be left to eat on February 2nd.

"February 2" dragon head, the earth everything began to recover, all plants and animals began to raise their heads, a year to start a good start, ushered in the wind and rain. The Dragon King is in charge of rainfall, he went up to the Palace of Heaven, farmers have to put the best offerings to the Dragon King to eat. Using the pig's head as an offering to honor the ancestors and offerings to heaven, it seems to have said.