Coins of different denominations and sets have different weights. For example, 1 yuan coin, the third set of RMB 1 yuan coin is made of copper-nickel alloy and weighs 9.32g, and the fourth set of RMB 1 yuan coin is made of nickel-plated steel core and weighs 6.05g.
Fifty cents, the third set of RMB fifty cents weighs 6.02g, and the fourth set of RMB fifty cents weighs 3.80g.