Traditionally, China people never forget to pay homage to their ancestors during festivals, and the Spring Festival is no exception. In China, offering food or flowers is a common ceremony, and the form of ancestor worship may vary according to religious beliefs.
But the significance of commemorating ancestors is the same. One of the most important contents of family sacrifice activities. According to the folk concept, a person's ancestors, like heaven, earth and god, should be seriously worshipped.
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Sacrificial ceremonies include burning incense, chanting greetings, offering rice soup, offering tea, offering silks, offering wine, offering boxes, offering meat, offering prayers, burning greetings, sending off gods and so on.
In some places, when burning silk and paper, the priest will offer a glass of wine before God, and then the priest will send it to the place where silk is burned, soak the wine on it, and drop the wine into the word "heart" to show the piety of the worshippers.
References:
Baidu encyclopedia-ancestor worship