Juandunzi, also known as Juandan Zhi Sha, is a unique beauty spot on the face of some East Asian women. It is usually located near the corner of the mouth, and it has a significant cultural significance in China. According to Chinese culture, if a woman has this mark, she may have been humiliated or embarrassed for an hour by her lover. This concept originated from the Ming Dynasty and was popularized during the Qing Dynasty. It is often used as a sign of affection and love between partners. In modern times, some women still choose to get Juandunzi done as a symbol of their loving relationships. However, it should be noted that this beauty spot can sometimes be associated with shame or embarrassment. Therefore, getting Juandunzi done requires careful consideration and understanding of the cultural context.