This summary is not the rule. The rule text controls.
When a minor's property goes up for sale in court, there's a minimum price the court sets ahead of time. If the highest bid at the sale doesn't meet that minimum price, the sale can't go through. The property simply doesn't sell at that point.
If this happens, the tutor (the person managing the minor's property) can ask the court for permission to try again. The court can approve a new sale, but this time with a lower minimum price. This new attempt has to follow all the same steps and requirements as the first sale, like proper notice and procedure. The only real difference is the lower minimum price the court allows.
This rule protects the minor's interests by making sure their property isn't sold for too little money. At the same time, it gives a practical way to move forward if nobody was willing to pay the original minimum price.