Excuse me, what's the difference between cursive script and our usual scribbling?

Cursive script: a style of Chinese characters characterized by simple structure and continuous strokes. Formed in the Han Dynasty, it evolved on the basis of official script for the convenience of writing. There are Cao Zhang, Cao Jin and Crazy Grass. There are rules to follow in the changes of strokes, such as the urgent chapter of the Three Kingdoms Wu in Songjiang Edition. Today's grass is eclectic and fluent, and its representative works include Wang Xizhi's "The First Moon" and Jin Dynasty's "Getting Time". Mad grass appeared in the Tang Dynasty, represented by Zhang Xu and Huai Su, and its brushwork was wild and uninhibited, which became an artistic creation completely divorced from practicality. From then on, cursive script was only the works of calligraphers imitating Cao Zhang, Cao Jin and Kuangcao. The representative works of Weeds, such as Abdominal Pain by Zhang Xu in the Tang Dynasty and Autobiographical Postscript by Huai Su, are all existing treasures. The cursive script doesn't know that Prime Minister Zhang is good at cursive script, so he can't. At that time, all contemporary people laughed at it. The prime minister is calm. A word a day, a pen, a book, a piece of paper full of dragons and snakes dancing for my nephew to record. When the waves were in danger, my nephew turned a blind eye and asked, "What's the word?" The prime minister knew it long ago, but he didn't know it himself. He scolded his nephew and said, "If Hu hadn't asked earlier, I would have forgotten." Graffiti is graffiti without artistic content.