What do you mean, Bao Fa welcomes you, and the altar is decorated with utensils?

General idea: the law governs the gray movement and welcomes the summer solstice festival; Complete the most solemn sacrifice ceremony on the altar.

Baoliu: The ancients cut the bamboo tube into six laws and six laws according to the pitch standard, and added the ash burned by reed film into it. If the solar terms are different, the ash inside will fly out automatically, and people will know that the solar terms are coming, and the sense of rhythm comes from this.

Length: summer solstice, the longest day.

Altar: An angular altar.

I quit.

Attendance ceremony: the highest ceremony.