When the stock price reaches a certain position, the limit order is closed.

A limit order can contain stop-loss execution instructions, such as stock price 10, buy limit 9 and stop-loss execution 1 1.

When the stock price reaches 1 1, it will automatically cancel the order, even if it falls by 9, it will not be bought.

Limit order: Deal at a certain price. For example, when you specify a price of 4660, you will establish a long position of 5 lots of soybeans (buy 5 lots of soybeans), then you will only make a deal at this price. If the transaction is not enough for 5 lots and the price exceeds 4660, the order will not be placed any more.

Stop executing the instruction: specify the transaction price area. For example, if you specify the price to 4660, open a long position of 5 lots of soybeans and stop at 4665. Then, you place an order at 4660. If this price does not allow you to make 5 lots, you will continue to place an order at a higher price until these 5 lots are sold; If the price is higher than 4665 and there are not enough 5 lots, the order will not continue.