Account precious metals, commonly known as paper silver, are paper transactions of precious metals, similar to market-oriented systems. They are transactions between investors and traders, and the traders of paper and silver are banks. The so-called bidding system is a matchmaking system, in which investors trade with investors. Futures silver, td silver and stocks are all matching systems, and you can't trade without your opponent's disk. Paper silver and spot silver are market-oriented systems, which can close positions and lock in profits at any time. The buying and selling price is set according to the current price. The selling price is two points less than the current price, and the buying price is two points more than the current price. For example, the current price is 3.90 grams and the price is 3.88. For example, if you go long at this price of 3.90 (buy first and then sell) and buy a position at 3.92 (purchase price), you will earn back the purchase fee only when the current price rises to 3.92, and then you will sell and close your position at 3.92. You lost by two points. Note: What beginners can't understand is that they don't understand the so-called price. The price I said above does not mean the current price. In fact, the bank sold it to you at a price higher than the market price, but lower than the market price. Banks earn 4 cents (spreads), paper gold charges 80 cents, and platinum and palladium crude oil spreads are higher. Banks that can speculate in paper and silver are ICBC, BOC and CCB, and buy directly from banks. China Bank can buy and sell at a minimum of100g, and can only do more. CCB can buy and sell one gram, but can only do more. ICBC is the best, shorting can make more profits in both directions, and buying at least one gram.