Without rules, there would be no Fiona Fang. What does this mean? Tell me your explanation.

Language-Zou Mengke, Mencius Li Lou in the Warring States Period: "If you leave Lou Ziming, you will lose your son. If you don't obey the rules, it is not Fiona Fang. "

"No rules, no Fiona Fang" is a common saying, which often emphasizes that everything must have certain rules, rules and practices, otherwise it will not succeed. It originally came from the carpenter's term, and "gauge" refers to compass. When carpenters work, they will encounter the work of making round windows, doors, round tables and stools. , and ancient craftsmen already know to draw a circle with "rules"; "Moment" is also a woodworking tool, which refers to a curved ruler. The so-called bending ruler is not a bending ruler, but a right-angled ruler. It is a necessary ruler for carpenters to make square doors, windows, tables and stools. Of course, you can't make it square or round, so that's why you have that sentence. However, now this proverb is no longer dedicated to carpentry, but has become a universal warning. Without certain rules, everything will go wrong. "Rule" and "moment" are combined into a new word, and "rule" can be interpreted as some kind of rule, standard, norm or habit. "Fiona Fang" no longer refers to square and round things, but to concrete things.