, "in the dark" painting of flowers and vertical shaft74 CM long and 88.5 CM wide and 50.5 CM axisIn the dark (March 22, 1889 - July 3, 1959), formerly known as Yu Kuizhao, later renamed as, word AngShu, agency not the dark, and no idle people, blasted into, old and modernpainters.Originally from shandong penglai, born in Beijing, have been to facilitate the transfer.After 1912 into the normal school, who teaches at a private fine arts department of normal school, private university of north .Mentor, who traces by providing the traditionalpainting and history institute.Since 1935, specializing in traditionalrealistic painting flower and-bird painting.Successive central academy of fine arts after 1949 national institute of fine arts, Beijingpainting research association, vice President, vice President of the Beijing art academies.