"Lihai Ji" said: "The land branch of the Yin and Yang family is Liuhe, which means that the meeting of the sun and the moon is so built in the ugly time, and the meeting of the sun and the moon is so built in the ugly time, so the child and the ugly are in harmony; The meeting of the sun and the moon was built in Yinshi, and the meeting of the sun and the moon was built in Yinshi, so Yin and Hai are in harmony. The meeting of the sun and the moon is so built at the time of the egg, and the meeting of the sun and the moon is so built at the time of the egg, so the egg is in harmony with the egg; The meeting of the sun and the moon is so built in the unitary time when it is in the morning, and it is so built in the western time when it is in the morning, so Chen and the unitary are in harmony; The meeting of the sun and the moon was built in the third time, and the meeting of the sun and the moon was built in the third time, so it has been combined with the application; The meeting of the sun and the moon is so built at noon, and the meeting of the sun and the moon is so built at noon at noon, so the afternoon is not the same. "
"Kaoyuan" said: "Liuhe is built with the moon and will cooperate with the moon. For example, the first month was built in Yinshi, and the month will be in Haishi, so Yin and Hai are in harmony; February is built at Maoshi, and the month will be at Xushi, so Maoshi and Xushi coincide. The moon is left-handed, and the moon will turn right, which is equivalent to the reverse, so it is called Liuhe. " Press: the month will be the day. The moon itself has no light, and it is irradiated by the sun, and the moon and the sun combine to form a calendar year. The day is the month, so it is called the month. No, another god rotates to the right with the sun. Its operation order is called "Zhang" in Hai, "Lou" in You, "Liang" in Shen, "Shi Shen" in Shen, "quail fire" in the afternoon, "quail tail" in Chen, "Shouxing" in Mao, "Wood Analysis" in Yin, "Xing Ji" in Chou and "Xuan" in Zi. This statement has been made in Zuo's Biography in the Spring and Autumn Period. It is still in use today, and its ranking runs twelve officials. All of the above are recorded in the Public Rules.