The height of an adult is seven and a half heads long: from the top of the head to the chin, from the nipple to the navel, from the navel to the perineum (sitting plane), from the perineum to the middle of the knee, and from the middle of the knee to the heel (sole).
Or, the connecting line from navel to two femoral rotors is half head, and the connecting line from rotors to soles is four heads. In addition, half the height of the human body is at the phalanx, and the hands are flat, straight and wide, which is roughly equivalent to the height.
Extended data:
Beginners still practice seven heads/seven heads, which is relatively convenient for the previous practice. Wait until you are proficient, and then try other proportions of human body structure, such as the legendary nine-body. At present, there are many other theories about the ratio of head to body (there is no dead rule, which is determined by personal ability and aesthetics). Beginners are advised to draw according to the proportion of most people with increasingly different styles.
Knowing the height ratio of the human body, you can begin to learn to draw bones and bodies. Many people may think that you don't need to learn this foundation, but I suggest you learn it. Foundation is called foundation because it can make the painting characters more beautiful, reasonable and harmonious.