2019 is the 100th anniversary of the May 4th Movement. Altogether 100 science and technology-related photographs from 1919 to 2018 are selected in this paper to show the development of science and technology in China and reflect the Chinese scientist and technician working status and spiritual outlook over the past 100 years. Standing at the new stage of history and on the new journey of realizing the great rejuvenation of the Chinese nation, we should continue to carry forward the spirit of the May 4th Movement and work hard to create brilliance.

The modern Chinese sci-tech societies have been developing for a hundred years and becoming a magnificent mosaic of the world sci-tech societies development since the rise of societies in China in the late nineteenth and early twentieth centuries, especially the May 4th Movement. At the time of celebrating the 100 years anniversary of the May 4th Movement, it is crucial to implement a systematical review on the development of sci-tech societies, and analyze the role of sci-tech societies for enlightening scientific culture, improving science and technology development and promoting economy construction. Such a research could be not only of theoretical significance but also of practical value to explore the development road in the new era for Chinese sci-tech societies.

The May Fourth Movement brought "Mr. Sai" to China. The influence of science on national construction and development has increased over the past century. To commemorate the 100th anniversary of the May Fourth Movement, this paper reviews the century-old inheritance of the scientific spirit in China since the May 4th Movement in a perspective of the connotation of the scientific spirit, and discusses the step-by-step process of the Chinese people's understanding of science from the salvation of the country to the country's productive force and important cultural element. This paper also clarifies the position of the scientific spirit in the science and technology system reform, and analyzes the process of gradual deepening of China's science and technology system reform and currently existing problems in terms of the scientific spirit standard. Finally, this paper puts forward some suggestions for the existing problems and the outlooks of the science and technology system reform.

五四运动是一场以先进青年知识分子为先锋、广大人民群众参加的彻底反帝反封建的伟大爱国革命运动。100年前，中国青年振臂高呼，发起了传播新思想、新文化、新知识的伟大思想启蒙运动和新文化运动，中国青年从此作为独立的力量开始登上历史舞台。五四运动孕育了爱国、进步、民主、科学的伟大五四精神，这是中华民族百折不挠、自强不息的民族精神的生动写照，也是激励一代代有志青年拼搏努力、奋发有为的强大精神动力。

2019年是中华人民共和国成立70周年，也是五四运动100周年。100年前，一批先进知识分子率先发起了传播新思想、新文化的爱国救亡运动，誓言“国土不可断送、人民不可低头”，奏响了恢弘雄壮的爱国主义壮歌。回顾中国青年百年奋斗史，“爱国、进步、民主、科学”的理念早已深刻融入青年的血液中。100年来，一代又一代中国青年接续奋斗，用青春之我创造青春之中国、青春之民族。