The ugly year, Mao year, Si year, Wei year, You year and Hai year are all these years.

? Generally speaking, there is no such thing as "ugly year, Mao year, Si year, immature year, unitary year and Hai year", and all of them are matched with "A, B, C, D, E, Ji, G, Xin, Ren and Ghost". For example, the ugly year B is one of the first years in the lunar calendar, such as 2009 and 65438+.

? Tiangan has ten characters, namely, A, B, C, D, E, Ji, G, Xin, N and D, which are collectively called "Ten Tiangan". There are twelve words in the earthly branches, the order of which is Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai, which are collectively called "Twelve Earthly Branches". This is an ancient method of timing, with a cycle of 60 years.