During the trading process, common mistakes mainly focus on operations, cognition, and risk control. Here are some typical types:

Operational Errors

• Input errors: For example, entering the wrong account number or amount when transferring, or mistakenly selecting the trading variety when placing an order (such as entering the wrong stock code).

• Misclicks or misoperations: During mobile trading, mistakenly tapping the 'Buy' or 'Sell' button due to screen mis-touches, or submitting without confirming transaction details.

• Network delays causing duplicate operations: Repeatedly clicking to submit after network lag, resulting in multiple orders, only to find out about the abnormal positions after execution.

Cognitive Errors

• Unfamiliarity with rules: For example, not understanding the delivery date of futures contracts or the limits on price fluctuations of stocks, leading to forced liquidation of positions or inability to stop losses in time.

• Blindly following the crowd: Trusting 'rumors' or mimicking others' operations without understanding the real value of the assets, leading to a price crash after buying.

• Confusing types of orders: For instance, mixing up 'market orders' and 'limit orders'; market orders may result in buying at a higher cost, while limit orders may fail to execute if the price is not reached.

Risk Control Errors

• Full position trading: Investing all funds at once without reserving capital to cope with price fluctuations, resulting in significant losses when downturns occur.

• Not setting stop-loss or take-profit: Being greedy and not taking profits during gains, or holding onto losses with false hope, ultimately leading to profit erosion or expanded losses.

• Over-leveraged trading: Using high leverage (such as futures or forex margin trading), where slight price fluctuations may trigger liquidation, resulting in total loss.

Other Common Issues

• Insufficient account funds: Not having enough balance when buying, leading to failed orders and missed trading opportunities.

• Ignoring market risks: Trading before major events (such as policy changes or earnings releases) without a prior risk plan, affected by sudden news impacting prices.

The key to avoiding these mistakes is: carefully verify information before trading, familiarize yourself with the rules, manage positions and risks well, and avoid impulsive operations. If you're a novice, it's recommended to practice through simulated trading first, then gradually participate in real trading.