During the Warring States Period, gold was actually brass. Ancient metallurgical technology was not good enough, so the inscriptions on bronze vessels were called gold inscriptions.

In ancient times, emperors often rewarded thousands of taels of gold. If real gold were not available in the Federal Reserve, the reserve would not be that large.

Copper is the same as gold. During the Western Zhou Dynasty, most of the gold was real gold produced in Chu. In the Han Dynasty, due to limitations in smelting technology, gold and copper were mixed, and then until the Song Dynasty, so-called gold and silver were all mixtures of gold, silver, and copper. Shen Kuo of the Song Dynasty once pointed out that the medicinal gold of Chu was real gold. Therefore, the naturally formed gold nuggets are mostly real gold, while the smelted ones are medicinal gold, that is, a mixture of brass, zinc and copper at a certain period of time.

Before the Qin Dynasty, gold was mainly used as a unit of measurement, that is, 1 gold = 1 catty of copper.

During the Warring States Period, twenty taels were equal to one gold, and ten golds in Shang Yang’s Reform were Two hundred taels of copper, and finally fifty taels of gold, which is one thousand taels of brass

When Qin Shihuang unified China, it became sixteen taels per catty, and it was still used until the founding of New China. In the early days

The actual purchasing power of ten taels of gold is equivalent to several thousand yuan in modern times

If we really count the fifty gold that Shang Yang gave to the man who moved the wood according to the calculation above, it would be 700,000 , Qin Xiaogong is still not looking for him to fight to the death?

I came across it when I was sorting out the information. I will correct it and adopt the answer here.