How to write hard pen cursive script?

How to write a good-looking hard-pen cursive script can imitate the following picture:

About cursive script:

"Shuo Wen Jie Zi" says: "There are cursive scripts in Han Xing". The cursive script began in the early Han dynasty, and its characteristics are: keeping the outline of characters, damaging the official rules, rushing away and rushing away quickly. Because of the meaning of grass, it is called cursive script.

Professor Peking University and pioneer Li Zhimin commented: "Zhang Zhi created the first peak since the cursive script came out, and being good at it is both good and good."

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.

From the development of cursive script, the development of cursive script can be divided into three stages: early cursive script, Cao Zhang cursive script and modern cursive script.

Early cursive script and official script were parallel, generally called official script, but in fact some forms of seal script were mixed.

The early cursive script broke the strict rules of official script and was a hasty writing. It's called Cao Zhang.

Cao Zhang is an elegant cursive style, which combines early cursive and Han Li, and has obvious waves, wavy strokes, independent characters, square glyphs and horizontal strokes. Cao Zhang was the most popular in the Han and Wei Dynasties, but it was revived in the Yuan Dynasty and transformed into the Ming Dynasty.

At the end of the Han Dynasty, Cao Zhang was further "grassed" and the strokes of Lishu were removed. The upper and lower characters and strokes are connected, and the radicals are simplified and borrowed, which is called "modern grass".

Jincao evolved from Cao Zhang, and its calligraphy style has been popular since Wei and Jin Dynasties. In the Tang Dynasty, this kind of grass was described as "wild grass", also known as "big grass", with continuous strokes and changeable glyphs.