Why can ancient men find three wives and four concubines, and women can only marry one husband?

Because of the feudal system and social conditions at that time, men were superior to women, and men had a high status, while women had no status at that time. Men can marry many wives, while women can only bear to share their husbands with many people. A man can marry three wives and four concubines, and a woman can only marry her husband and follow him all her life until death do us part. It was not until the founding of New China that men and women enjoyed equal status, but this concept still exists today. Some people still prefer boys to girls.