20 1 1-7-30, and it is indicated in the Gregorian calendar that "turtles are not allowed to move"

Avoid: not suitable. Migration in the Gregorian calendar means that it is suitable for movement and so on. In ancient times, when a major event happened, the turtle shell was burned with fire to predict good luck or bad luck according to the cracks in the turtle shell, which was called "being a turtle." "Li Zhou Guan Chun Da Bu": "Taking state affairs as the tortoise's eight lives." Zheng Xuan's note: "There are eight people who want to decide the important affairs of the country. They will make their words so that they will be able to kill the turtle." "Li Zhou Guan Chun Da Bu": "Guo Dazhen, Bu Lijun and Bu Dafeng are all tall-legged turtles." Zheng Xuan's note: "For turtles, fire is the symbol, which means burning left in spring, left in summer, right in autumn and right in winter." Being a turtle is divination and divination.

To sum up: don't move like a turtle, that is to say, don't move and divination on this day.