What is the scene of Niu's work Hua?

Niu's Flower is a representative figure photography work after the founding of New China. In his portraits, not only Yu Feian, Wu Jingting, Wang Xuetao, Chen Banding, Jiang Yan and others who participated in the 1955 National Art Exhibition were included, but also Qian Xuesen, Mao Yisheng, Guo Moruo, Jiang, Qi Baishi, Wang Jinxi and others who were photographed by cattle in the 1950s and 1960s.