Briefly describe the development stages of news photography before the founding of New China?

In the gestation stage of news photography (19,40 years-1900), with the arrival of missionaries in China, aristocratic photography and photo studio photography appeared; In the embryonic stage of news photography (1900-1911), news photography began to separate from documentary photography during this period, and photography became more and more closely related to current affairs. News pictures reflecting social trends appear in newspapers from time to time, and the number of news pictures used by domestic newspapers and periodicals is gradually increasing. The development stage of photojournalism (19 12- 1927), the appearance of pictorial, photojournalism pictorial, photography weekly, the propaganda activities of producers' newspapers and the appearance of workers' and peasants' newspapers; The tortuous dilemma of news photography (1927- 1937), the Kuomintang reactionaries persecuted journalists, and journalism entered a low stage of development; The formation and development of people's news photography (1937- 1945) has taken shape after more than 30 years of development. * * * Producers can not only train new photographers themselves, but also publish various pictorial and hold various photo exhibitions. Photography specialization and the growth of photography team, the introduction of news photography rules and regulations, the rapid development of news photography in various base areas, and the holding of film exhibitions.