Give the reward in a hard way instead of just putting cash in an envelope, let people to get the reward with their effort, teach them the words "no pains, no gains", also develop their logic and imagination,exercise people's patience and improve the attention of children. move the ball to the designated position, and push the slide bar, and then the lid will be opened, take away the reward and close the lid, easy to get the money maze loot with patience. Also act as a great party accessory, hold a race to see who is the first to open the box, both the process of the ball moving and receiving the reward can get great fun. These money maze puzzle box also is a coin box, can be sent to friends as a gift for birthday, Children's Day and Christmas, these functional boxes cater to most people's