The four most famous international exchanges:

Binance INTL	OKX INTL	Gate.io INTL	Huobi INTL
China Line　APP DL	China Line　APP DL	China Line　APP DL	China Line　APP DL

Note: The above exchange logo is the official website registration link, and the text is the APP download link.

Gold: Gold itself is a precious commodity, and its price will rise with inflation, which means that gold offsets the loss of inflation and ensures that investors' assets will not be eroded by inflation.

Almost all luxury goods will depreciate. Since gold is one of the rarest, most precious and most valued metals, there is no depreciation problem for gold, and its brilliance and value are permanent. Therefore, it has special currency properties as a reserve and investment. The output is determined by the total amount of mineral reserves.

Legal tender: Also known as legal tender, it refers to paper money issued independently by countries or governments, which does not represent real goods or commodities, and the issuer has no obligation to redeem the currency in kind.

Currency that only relies on government decrees to become legal currency. The value of legal tender comes from the owner's belief that the currency can maintain its purchasing power in the future. There is no upper limit on the issuance volume.

The currencies of various countries in the world, such as RMB, US dollar, franc, pound, yen, peso, Thai baht, ruble, etc., are all corresponding legal tender;

Q coin: also called QQ coin, a virtual currency launched by Tencent, which can be used to pay for QQ's QQ bank number, QQ membership service and other services. It can be exchanged by phone recharge, bank card purchase, network recharge, etc.

The similarities between Bitcoin and gold, legal tender, and Q coins as currencies: they all have the properties of general equivalents, can be paid, circulated, and have a value scale.

The difference: the issuing agency of legal tender and Q coins is a government or agency, and there is no upper limit on their issuance, which is the main cause of inflation.

The quantity of gold and Bitcoin is fixed and rare, which means that they both have the function of preserving value.

The quantity of gold must refer to the limited mineral resources.

The number of Bitcoin must have been determined by Satoshi Nakamoto when designing the Bitcoin system, and its total number will reach a maximum of 21 million in 2040.