It is a truth to check the square, the nine squares and the Mi Zige, that is, try to write the words in the middle of the square. The so-called rules, no rules, you can't be Fiona Fang. Formally speaking, it should be followed, but there is no need to use Mi Zige in real calligraphy, but it is bound, because some good calligraphy is to seek the right in mistakes and consolidate measures in risks, rather than let nature take its course. The computer calligraphy style that is most suitable for Mi Zige is standardized and formatted. If you are writing traditional calligraphy, it is easy to master the shape and structure of words by using the grid of Tian Zi and Jiu Gong Ge. Mainly used for beginners to practice block letters and running scripts.