Some experts in China have found that 5 years old is the best starting period for receiving sexual health education. It is suggested that before children's sexual concept is distorted by some bad social influences, they should popularize sexual knowledge from kindergarten, popularize correct sexual concept and scientific physiological knowledge as soon as possible, and learn to protect themselves.
Foreign sex education began in kindergarten, and foreign children knew their bodies and how to protect sex from childhood. However, most of the sex education in China is still set in junior high schools.