Why is a lens with a focal length of 35mm called a humanistic lens?

Humanistic photography can be understood as two meanings: humanism is the abbreviation of human culture, which means people think rationally about the known or unknown objective things or phenomena in the world from their own or others' point of view, and the personal subjective knowledge points summed up are in line with the law of world development and can be accepted by the public. The content of humanistic photography needs to be related to people and culture (activities); Humanistic photography is a subjective expression of the objective world, and its content is subjective. In the circle of photography lovers in China, when it comes to humanistic photography, the most classic images are such as "Children with bright smiles under the blue sky in Tibet", "Yellow land and old farmers in western rural areas", "Silhouettes of fishermen casting nets at the bow of independent boats at sunset" and portraits or holiday photos of various ethnic minorities wearing national costumes.