Why did ancient Korean women wear breasts?

It's just a custom in the eyes of ancient Koreans. Bare breasts are an honor, because only women who have given birth to sons are eligible to wear bare breasts, and women who are not married or married without sons are not eligible. Koreans are deeply influenced by Confucian culture, so it's good to have no descendants. When a Korean woman reaches the age of marriage but can't wear a bra, she is likely to be looked down upon, because you haven't carried on the family line for her husband's family, and the great task has not been completed! Korean women who wear chests probably walk with the wind in the street, full of pride.