Zhang Daqian (1899-1983), formerly known as Zhengquan, later renamed Yan, with the word Jiyan, and the name Daqian, a calligrapher from Neijiang, Sichuan. He is omnipotent in painting, calligraphy, seal cutting, and poetry, combined with painting style, craftsmanship and writing. It is praised as "Oriental Pen". Seal: Zhang Yan's private seal. This book: The time is fast, and the time to read and write is still a waste of time. We must not neglect and avoid famine, and Jane will bury her head and work hard today. The world is difficult, that is, it is not easy to dress and eat normally. Only diligence and thrift can save him from asking for help. The brushwork is vigorous and powerful, worthy of everyone's work.