You placed a limit order but it never filled, and you received a pop-up notification related to "price protection". This usually happens because your set price deviates too far from the current market price, and the system marks it as an "unreasonable quote" to block it temporarily.

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After price protection is triggered, this order will usually be directly rejected or auto-canceled, instead of staying pending. To place a new valid order, you need to adjust the price to the range recognized by the system.
Confirm your order status first before re-submitting
Specific rules vary across trading platforms, first check which scenario you are facing:
Scenario A: The order is directly rejected, status shows "Failed" or "Canceled" This usually happens because your entered price is outside the system's allowed range. It may be too far from the index price, or marked as an "irrational quote" during fast market swings. You don't need to do extra troubleshooting, just go to the "Trade" page, enter a new eligible price and place the order again.
Scenario B: The order shows "Pending" but never gets filled This means price protection was not triggered, your order simply did not hit your target price. You can choose to cancel the existing pending order and set a new price closer to the current market price, or keep waiting. Pick the option based on whether you want the order to fill quickly or strictly stick to your original target price.

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Placing a new order: What price to set to avoid system blocks
If your order was rejected due to excessive price deviation, pay attention to these two tips when you re-enter the price:
Check the "Ask 1" and "Bid 1" prices: Do not only refer to the K-line chart. Check the order book before placing your order, set your price near the current Bid 1 or Ask 1 level, and the chance of being blocked by the system will be much lower.
Avoid periods of sharp market volatility: When the market is surging or crashing sharply, the system will dynamically narrow the allowed price deviation limit for risk control. You do not need to force placing an extreme limit order at the peak of high volatility. Wait until the market calms down a bit to place your order, the success rate is usually much higher.
Verification after operation: After you submit the new order, you can find it in the "Open Orders" list, with status showing "Pending" and no error prompts. That means your new order is placed successfully.


