Ten dragons to control water, seven days, five days, and ten people in C. What do you mean?

In the almanac, there are always several dragons, which are called "Dragon Water Control Map". It is believed that "more dragons depend on it, less dragons drown it", which means that the fewer dragons there are, the more water there is; The more dragons, the less water. In which year did several dragons control the water, it was calculated according to the "Sixty Jiazi Method". From the first day of the first month to the twelfth day of the first month, which is what we usually call the noon of the twelve zodiac signs of Zi Ugly Xu Hai, among which Chen is a dragon. If the word "Chen" ranks on the ninth day, that year will be the flood control in Kowloon. Ranked in the second grade is "Two Dragons Governing Water".

On the second day of the first lunar month, the three dragons control water and the rain is even. There is more rain in spring, summer, autumn and winter, and all beans and wheat are harvested.

On the fourth day of the third grade, it rained for three or four days. The rain was evenly distributed and the harvest was high and low.

The sixth day of the fifth lunar month is the May 6th the Year of the Loong, which is half-fated and half-lucky.

On the eighth day of the seventh lunar month, seven or eight dragons control water, and there are locusts in the spring and autumn months, which harm the people all over the world. Food prices are long, people are hungry, and rural areas starve to death.

At the beginning of the ninth lunar month, the ninetieth dragon was used to control water. This year, floods, autumn droughts, scorched seedlings and no crops were harvested.

On the twelfth day of November in the lunar calendar, the dragon in December is in charge of water control. Years of drought, autumn and winter drought, empty space, no crops, rivers and lakes cut off, rain and snow in winter.

There is a saying in the old calendar that several cows plow the fields. The days in the old calendar are recorded by cadres and branches, and every day has a representative of cadres and branches, so there is an ugly day every twelve days. From the first day of the first month to the first day of the first month, as soon as the word "ugly" is put on, it is necessary to plow the fields for several cows. On the first day, "ugliness" was cattle ploughing; On the second day of the second day, when it comes to "ugliness", two cows plow the fields ... and when it comes to "ugliness", twelve cows plow the fields. And use this to judge the quality of cultivation and harvest in that year. The more cattle, the better. The more, the better.

How many people divide the cake?

The same is true for several people to share cakes, that is, in an almanac with a calendar, there is a C day every ten days. From the first day of the first month, when the word "C" is placed on it, it is determined that several people share cakes (cakes and C are homophonic). On the first day, "C" was shared by one person, on the second day, "C" was shared by two people, and on the tenth day, "C" was shared by ten people. And use it to calculate the annual harvest.