What's the difference between "offering sacrifices" and "praying for blessings" in the Yellow Calendar?

Sacrifice is a traditional ceremony to seek blessings from the gods and eliminate disasters, which is called auspicious ceremony.

In primitive times, people thought that the human soul could exist without the body. Sacrificial handle is a derivative of the concept of soul. The initial sacrificial activities were relatively simple and barbaric. People use bamboo or clay to shape gods, or draw gods such as the sun, the moon, stars and beasts on rocks as appendages to worship objects. Then food and other gifts for God are displayed in front of idols, the host prays, and the worshippers sing and dance to God. After entering the civilized society, the abundance of material makes the ceremony more and more complicated, and the sacrifice is more and more exquisite and standardized. "Guanzi Light and Heavy" said: "It takes 92 days from beginning of spring to beginning of winter, which is called summer solstice, and the wheat is ripe." The son of heaven was enshrined in Taizong, where wheat was filled. ..... From summer to the beginning, there are 46 days, and the millet is ripe in late summer and early autumn. The son of heaven worships Mao, and there are millet in it. ..... Count 92 days, this is called autumn. Autumn has come and the grain is ripe. The son of heaven was worshipped in Tai religion and left his country for the west 138 miles. Dressed in white and * white, with jade pendant, tin supervisor, blowing wind and chiseling stones, he led princes, doctors and scholars, followed the people, and called himself the sacrifice of the moon. ..... From autumn to the beginning, for 92 days, the son of heaven walked 92 miles north to the altar, dressed in black and black, and paid tribute to the prince, ministers and doctors, calling him a birthday sacrifice. "