How to fold ingots is as follows:

How to fold ingots:

1. Take a piece of paper, the aspect ratio is the size of A4 paper, fold the front and back three times .

2. Open the top fold and align the other end of the paper.

3. Fold all four corners into a triangle.

4. Fold it in half to form a shape similar to a boat. Pick it up, blow air into the gap at the bottom, and a gold ingot is ready.

Yuanbao is a kind of currency in ancient times, made of precious gold or silver. Generally, silver is the most common and gold is rare. In the history of Chinese currency, gold and silver were officially called "yuanbao" starting in the Yuan Dynasty.

However, as early as the early Tang Dynasty when Kaiyuan Tongbao came into being, people had the meaning of being large and precious, and pronounced it as "Kaiyuan Tongbao". In the Yuan Dynasty, gold and silver coins were called "Yuanbao", which meant the treasures of the Yuan Dynasty. Gold was called Jin Yuanbao, and silver ingots were called Silver Yuanbao. They had both political connotations and were also common names for gold and silver currencies.

Yuanbao originated in the Tang Dynasty. In the early Tang Dynasty (780~783), there were records of using silver to pay large amounts of horse money (paying large amounts of money to buy horses); it is also confirmed from the unearthed treasures : In the Tang Dynasty, there were silver "cakes" and "collars", that is, the boat-shaped "silver collar" looked like a boat when it was lying on its back and looked like a case (tabletop) when lying down.

The term "silver collar" as "yuanbao" began in the Yuan Dynasty. In the third year of the Yuan Dynasty, the silver from Pinghuaiku (the national bank at that time) was melted into "ingots", and any weight up to 50 yuan was cast into "ingots". , named "Yuanbao", which means "treasure of the Yuan Dynasty".