One dollar equals five grams.
conversion of current municipal units:
1kg = 1kg, 1kg = 2kg, then 1kg = 1kg ÷ 2 = 1g ÷ 2 = 5g; And 1 Jin =1 Liang, 1 Liang =1 money, then 1 Jin =1 money, so 1 money =5 grams, that is, 1 money =5 grams.
expansion:
current market system: 1kg = 5g 1kg = 1 liang = 1 yuan, 1 yuan = 5g
ancient old system: 1kg = 5g 1kg = 16 liang = 16g, 1 yuan = 3.125g
Analysis: < The commonly used conversion method is 5g(1 kg) ÷16 (the old system of 16 taels is one kg) ÷1 (the old system of 1 taels is one tael) =3.125g(1 tael), which is also the case in some textbooks of Chinese medicine colleges, which is consistent with the statement of readers who called yesterday. In fact, this conversion method is also flawed.
The ancient measurement system underwent many changes, and it was generally stable after the Ming Dynasty, with little change, with a kilo of about 595g. It was not until 1929 that the metrological reform was carried out, and the old system of 595g per catty was changed to 5g per catty. It should also be pointed out that in the restructuring in 1929 and 1959, the measurement of traditional Chinese medicine was treated as an exception, and the old system remained unchanged. In this way, from the Ming Dynasty to 1979, the correct formula for converting money into grams should be 595÷16÷1, and 1 money is about 3.72 grams.
In the long period before, weights and measures changed a lot, and it was necessary to convert according to how many grams a catty was at that time. Check out the Summary of Weights and Measures of Past Dynasties, such as from Qin Dynasty to Western Han Dynasty, where a catty was equivalent to 258.24 grams, 668.19 grams in the early Sui Dynasty and 222.73 grams in the late Sui Dynasty.