Whose copybook is good for beginners of calligraphy?

Copying the four masters of regular script in Europe is the collective name of four calligraphers who are famous for regular script in the history of calligraphy. Regular script, also known as the Four Books, has four styles: Ou Yangxun in the early Tang Dynasty (European style), Yan Zhenqing in the prosperous Tang Dynasty (Yan style), Liu Gongquan in the Tang Dynasty (Liu style) and Zhao Mengfu in the Yuan Dynasty (Zhao Ti). Ou Yangxun (557-64 1) was born in Linxiang, Tanzhou (now Changsha, Hunan). His calligraphy achievements are based on regular script, with bold brushwork and unique structure, which is called "European style" by later generations. Ou Yangxun (European Style) in Tang Dynasty: Regular script is rigorous and precipitous, and is praised as "the first regular script in Tang Dynasty" by the world, with its masterpiece "The Ritual Spring Inscription in Jiucheng Palace". Yan Zhenqing, (709-785), a native of Wanzhao, Jingzhao, was born in Linyi (now Linyi, Shandong) in the Tang Dynasty. In the history of calligraphy, he is the most accomplished and influential calligrapher after the two kings. His book was first learned in Zhang Xu's four years in the early Tang Dynasty. Later, it was widely collected and learned, changed the ancient method, opposed the calligraphy style of the early Tang Dynasty, and used the pen of seal script to make it thin and hard, with a broad structure and magnificent momentum. This style also reflects the style of the prosperous Tang Dynasty, which is consistent with his noble personality. This is the beauty of Yan Zhenqing's calligraphy in the Tang Dynasty: his regular script is dignified and majestic, and is praised by the world as "Yan Ti", and his masterpiece "The Monument to Many Pagodas". Liu Gongquan (778 -865), whose real name was Cheng Xuan, was a Jingzhao Chinese in the Tang Dynasty. He is a prince's official and is called "Liu" in the world. Later generations called it "Yan Liu", which became a model of calligraphy in past dynasties. His calligraphy is vigorous and vigorous, and his words are rigorous and meticulous. As far as the characteristics of Chinese characters are concerned, they are famous for their thinness and strength. The regular script written is beautiful and strong, and the running script and regular script are the most exquisite. Liu Gongquan (Liu Ti) in Tang Dynasty: His regular script is clean and vigorous, with rigorous structure, delicate brushwork and straight brushwork. He is known as "Liu Ti" in the world, and his masterpieces include Mysterious Tower Monument and Shence Army Monument. Zhao Mengfu (1254— 1322) was born in Huzhou (now Xing Wu, Zhejiang). He is good at seal script, official script, authentic works, calligraphy and cursive script, especially at regular script and calligraphy. The Book History of Yuan Dynasty says that "Meng Zhi's seal calligraphy is the highest in ancient and modern times, so the title of the book is the world". Yuan Xianyu wrote the Collection of Xue Kunzhai: "Zi Angyin, Li, Zhen, Xing and Dian Cao are the first in the contemporary era, and Xiao Kai is the first among Zi Ang's books." His elegant style, neat structure and skillful brushwork are praised as "Zhao Ti" by the world. Zhao Mengfu (Zhao Ti) in Yuan Dynasty: His regular script is round, delicate, correct and rigorous, but also elegant and beautiful. Known as "Zhao Ti" by the world, his masterpiece "Rebuilding the Three Storeys of the Xuandian". in good condition