In “The Golden Vase”, Ximen Qing has a lot of women, so it is said that his “dick” is big and good. This statement has misled many men, making them think that the larger the penis, the stronger the sexual ability; and vice versa, the weaker. The actual is not true, for the following reasons: 1, the size of the penis in a weak state is indeed a big difference, but once erect, the difference will become smaller. 2, the size of the penis and height is not proportional. Moreover, the length of the penis of the same person under different circumstances is not constant. Such as tension, cold or severe fatigue when the penis can be shortened. 3, some men worry that their penis is not big enough to make the woman sexually satisfied. In fact, female sexual satisfaction and penis size is not directly related. This is because the most important sexy area for women is the clitoris rather than the vagina. The most sensitive point in the vagina is the “G-spot”, which is located at the front wall of the vagina about 5 cm from the vaginal opening. Stimulating the “G-spot” can make the woman get sexual pleasure and reach orgasm. Therefore, as long as the penis can reach 7 cm long after erection, it can solve the problem of sexual satisfaction of the female. To sum up, we hope that the majority of young men and women treat the size of the penis correctly, do not blindly believe in deceptive advertising and surgery or medicine, so as not to consume money and hurt the body, endless harm.