1. Select a RMB with any denomination, as shown in the figure. (divided into 8 equal parts on average); 2. Fold a quarter of the coin in half, then fold each corner in half, and then fold both sides in half. Finally, fold the coin into two hearts.

In Qingyang, Longdong, "padlock" is a special engagement ceremony, also known as "tying daughter-in-law", "occupying daughter-in-law", "drinking" and "padlock lock", which is an essential etiquette for men and women to get married. In ancient times, locks were usually made of silver, and later made of red rope. Now, most of them are heart-shaped sachets embroidered with the words "harmony for a hundred years" and "harmony between dragons and phoenixes".