1. Because the beginning of February in the lunar calendar is also April in the solar calendar, the cardamom is in bud at that time and is about to bloom. Moreover, cardamom has its own unique fragrance, which is perfect to describe a girl under such circumstances.

2. This theory was first put forward by Du Mu. When Du Mu was thirty years old, he passed by Yangzhou and saw a brothel girl in Yangzhou. The woman was thirteen or fourteen years old. Du Mu was very amazed when he saw her, thinking that this kind of woman who was still in bloom was very beautiful. So I wrote a poem like "Ping Ping Niao Niao Thirteen Years Old, Cardamom Shaotou" in early February to praise this girl. Since then, everyone has had the habit of using the words "cardamom age" to describe young girls.

3. In ancient times, a woman was usually considered an adult when she was fifteen years old. Many people would get married as soon as they became adults. So, ancient girls would go to see each other when they were thirteen or fourteen years old. My future husband will also have a matchmaker who often comes in and out of my home to introduce outstanding men to my parents.