Contract Trading

A suspicious-login or new-device alert should trigger a full exchange security review: device list, anti-phishing code, 2FA method, notifications and withdrawal controls.

市价单看似简单，但薄订单簿会把本来清晰的交易计划变成糟糕成交。现货和永续合约下单前都应做订单簿检查。

Market orders feel simple, but thin books can turn a clean trade idea into a poor fill. Use this order-book checklist before trading spot or perpetuals.

做空永续合约可以抵消现货下跌，但对冲规模、资金费率、抵押品折扣和杠杆倍数决定它是否真的保护账户。

Short perpetual futures can offset spot downside, but hedge size, funding, collateral haircuts and leverage decide whether the hedge actually protects the account.

强平通常参考标记价格，而图表常显示最新成交价。两者的差异，可能解释为什么止损没有救下合约仓位。

Liquidation usually follows mark price, while charts often show last traded price. That gap can explain why a stop did not save a futures position.

在调交易机器人参数之前，用户应先检查API权限、IP白名单、提现权限和紧急撤销路径。

Before tuning a trading bot, users should lock down API permissions, IP whitelists, withdrawal access and emergency revocation steps.

移动止损可以跟随有利行情，但它仍是条件订单，会受到跳空、滑点、标记价格和薄订单簿影响。