I looked up some historical information and also consulted some semi-professionals.
Prices in the heyday of the Tang Dynasty, the end of Zhenguan and the beginning of Kaiyuan.
When the season is cheap, a bushel of rice (about 13 kilograms) in a good harvest year costs five cents.
In the Zhenguan and Kaiyuan eras, the average price of rice was twenty cents.
Silk cut (medium silk fabric) is approximately 1,500 wen.
A piece of silk in the Tang Dynasty was not as wide as modern ones, but it was half as wide as modern ones. A modern piece of silk measuring tens of meters would definitely cost less than a few thousand yuan.
Therefore, prices should also take into account all factors such as industrial productivity.
In terms of purchasing power, it is based on people's livelihood resources, plus taxes, etc.
Therefore, my conclusion is that after many calculations, the purchasing power of a penny is almost the same as it is now, ranging from 4 yuan and 20 cents to 4 yuan and 80 cents per penny.
Of course, when there is war, it must be very shocking.
For example, in the first year of Wude in the Tang Dynasty, the price of rice was more than 300 yuan per dou. The highest price was close to 1,000 yuan.
During the Anshi Rebellion, the price of rice was higher than the price of rice.
In the late Tang Dynasty, it was even higher.
Therefore, we calculate prices in peaceful times.
One to five.
I hope all book friends will add that this is just a conclusion based on the information I reviewed.