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The document is a guide on essential knowledge for investing in digital currencies. ### Key Points: 1. **Virtual Currency Trading Basics**: - 24/7 market operation with no price limits, allowing significant daily fluctuations. - Flexible trading units starting from 0.0001 BTC. - Instant trading with T+0 mechanism and high liquidity for withdrawals. - New traders should choose reputable exchanges, with a ranking of the top ten Chinese exchanges for 2025 provided. 2. **Core Knowledge for Beginners**: - Mainstream assets include BTC and ETH, categorized into payment (BTC), platform (ETH), application (SC), stablecoins (USDT), and platform equity (BNB). - Fiat deposit channels include certified OTC platforms and guaranteed private trades, with a warning about the high risks of unguaranteed private transactions. 3. **Trading Terminology**: - Definitions of terms like full position, partial sell, leverage, take profit, stop loss, bull market, and bear market. 4. **Digital Asset Security Guidelines**: - Risks associated with centralized exchanges and types of wallets (hot wallets for convenience but higher risk, cold wallets for secure offline storage). - Security recommendations include using cold storage for large assets, enabling two-factor authentication, and regularly changing passwords. The document concludes with a reference to the latest rankings of Chinese virtual currency exchanges and a mention of real stories of wealth gained and lost in cryptocurrency trading.