it's clever to be away from the building.

Source: Zou Mengke's "On Mencius and Li Lou" in the Warring States Period: "It is wise to leave the building, and it is clever to lose the son. If you don't follow the rules, you can't make a circle. It is difficult to correct six laws without five tones. Yao and Shun can't rule the world without benevolent governance.

Mencius said: "Even with Li Lou's good eyesight and Gong Bozi's good skills, if you don't use compasses and rulers, you can't accurately draw squares and circles; Even if there is a good teacher's listening ability, if you don't use the six tones, you can't correct the five tones; Even with Yao Shun's theory, we can't govern the world well if we don't implement benevolent policies.

Extended information

"Rules, Fiona Fang" in "No rules, no Fiona Fang" is actually more than just a word. Rules and regulations, yes, they are two things. There is an idiom called "Rules, ropes and ink", which refers to the standards that should be observed in doing things, and the four words that appear in it, rules, rules, ropes and ink, all come from the tools commonly used by carpenters in No.4 Middle School.

Gauges and moments are tools for approving circular squares respectively. The former is similar to today's compasses, while the latter is a right-angled square. Rope and ink refer to "elastic line Mo Dou". One end of Mo Dou can draw out a long line, add ink in Mo Dou, pull out the rope and stretch it straight, and stick it on the board, so that a straight ink line can be printed.

"Fiona Fang" is generally described in the ancient paintings of Nu Wa Fuxi, in which Nu Wa Fuxi holds rules and moments respectively, which not only represents "taking charge of the laws of heaven and earth" and "scale", but also implies the meaning of "Fiona Fang". (Ancient people came to the conclusion that the sky is round and the earth is square because of their limited ability to obtain information, and they would describe heaven and earth with Fiona Fang.)