On this day, 162 years ago, on December 11, 1863 (November 1, 1863 in the lunar calendar), Anne Cannon, an American female astronomer and one of the pioneers of stellar spectroscopy, was born. Annie JumpCannon (December 11, 1863-April 13, 1941) was an American female astronomer who did groundbreaking work on the spectral classification of stars. Anne Cannon was born in Dover, Delaware, USA in 1863 to a wealthy shipbuilder. Cannon entered Wellesley College in Massachusetts in 1880 to study physics, where she contracted scarlet fever and almost completely lost her hearing. After graduating in 1884, Cannon returned home and in 1894 returned to Wellesley College to serve as an assistant professor in the physics department while pursuing a master's degree. In 1895, Cannon went to Radcliffe College to study astronomy and later became an assistant to Edward Pickering, director of the Harvard University Observatory, and an assistant to the observatory in 1896. In the 1900s, Cannon used the color of stars as the basis and the order of the surface temperature of stars from high to low, and transformed the spectral classification established earlier by Edward Pickering and others into O, B, A, F, G, K, M, R, N, S and other types of classification are called the "Harvard Classification" and are widely used in astronomy. After Pickering's death, Cannon presided over the spectral classification of stars at the Harvard University Observatory, classified the spectra of more than 200,000 stars, and compiled and published the Henry Draper Catalog. From 1925 to 1936, she and her colleagues continued to classify more than 100,000 stars and compiled the Henry Draper Extended Catalog. In 1925, Cannon received an honorary doctorate from the University of Oxford in the United Kingdom, making her the first woman to receive this honor. In 1931, Cannon received the Henry Draper Prize from the American Academy of Sciences for his work on spectral splitting of stars. In her memory, a crater on the moon was named "Cannon" after her. Comment: She has made amazing achievements in astronomy despite "almost complete loss of hearing", which is worth learning and reflection from us normal people.