The props and usage of Happy Digestion are as follows:

　　1. The first gadget is to refresh props. The function is to rearrange the elements. Click to rearrange the layout of the current page.

　　2. The second prop is a mallet. Its function is to smash small animals or obstacles that can be eliminated. Click to eliminate a small animal or smash an obstacle, such as ice.

　　The third is to take a step back. Click Back to return to the previous state, but it can only be used for 3 times.

　　4. The fourth is exchange. If you want to change the position of a small animal, you can click on this prop and drag it to a nearby position to exchange.