In cryptocurrency trading, a "Trading Pair" refers to the exchange combination between two currencies, indicating the price of one currency when purchasing another. For example, BTC/USDT represents using USDT (Tether) to buy BTC (Bitcoin), where BTC is the base currency and USDT is the quote currency. This representation helps traders understand the relative values between different currencies and make corresponding trading decisions.

Trading pairs are mainly divided into the following categories:

1. Fiat to Cryptocurrency: For example, BTC/TWD indicates using New Taiwan Dollar to purchase Bitcoin, suitable for beginners to convert fiat currency into cryptocurrency.

2. Cryptocurrency to Cryptocurrency: For example, ETH/BTC indicates using Bitcoin to purchase Ether, suitable for experienced traders to swap between different cryptocurrencies.

3. Stablecoin Trading Pairs: For example, BTC/USDT, using price-stable cryptocurrencies for trading, helps to reduce the risks associated with price volatility.

4. Platform Token Trading Pairs: For example, BNB/USDT, using tokens issued by the exchange for trading, usually accompanied by fee discounts.