Please recommend some traditional Chinese pen copybooks.

Practice Hard Pen Calligraphy with Famous Posts —— Ling Feijing Henan Fine Arts Publishing House

Pen calligraphy Jingxiling publishing house

The brushwork of Jing and its characteristics (the brush is a famous post of past dynasties) Xiling Publishing House

Biography of Han Ji 'an (in regular script)/Famous Post Practice Hard Pen Calligraphy Henan Fine Arts Publishing House