The next sentence of "Without rules, there is no square circle" is that it is difficult to correct the six rhythms without the five tones.

Source: "Mencius Li Lou Shang" written by Zou Mengke of the Warring States Period: "The wisdom of Li Lou and the cleverness of Gong Shuzi cannot be made into a circle without rules. Without the five tones, it is difficult to correct the six rhythms."

It means: "With a shrewd eye like Li Lou and a skillful craftsman like Gongshu Bang, it is impossible to draw a square circle without following rules and regulations." Without rules, a square circle cannot be drawn; The six laws cannot correct the five tones; the way of Yao and Shun cannot govern the world peacefully without benevolent government.

No rules, no squares and circles is a Chinese word, and its pinyin is Wúguījǔbùchéngfāngyuán. If there are no rules, there will be no regular circles.