$BTC $ETH $BNB You are right, the terms A7, A8, A9 originally come from the real estate investment circle's jargon, used to represent the scale of an individual or asset. The specific meanings are:
A7 = Million (1,000,000)
A8 = Ten Million (10,000,000)
A9 = Hundred Million (100,000,000)
A10 = Billion (1,000,000,000)
A11 = Ten Billion (10,000,000,000)
A12 = Hundred Billion (100,000,000,000)
In addition to these, the notation A7.3 indicates a more precise amount, for example, A7.3 represents 3 Million.
These 'asset levels' are typically used to quickly understand someone's wealth level within the circle. As wealth accumulates, the A-level increases, and many people regard this as a symbol of status and wealth.
As for friends with A12, they are indeed not few—after all, in modern society, many large entrepreneurs and investors have already amassed assets at the hundred billion level. So, walking down the street, there may really be several friends with A12.
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