The life and work of Chinese bacteriologists. The film is based on the theme of profound psychological changes in a person's character, who, under the influence of many factors of life and situations, has to change his view of the world and science. One of the characters, Professor Huang, is shown in the process of development and formation. His character is vivid and memorable. If at the beginning of the film the young scientists seemed insufficiently serious to Huang, and he regarded all their...