What is the turtle sleeping place in Feng Shui?

What is the turtle sleeping place in Feng Shui? It's a good place with feng shui. You can buy a small turtle and put it in the house, and let it walk around freely. If it finally stops and cannot move away, this place must be a good place. This place is close to water and food sources, easy to access, and not disturbed by others. You can observe carefully, it's very interesting.