Turtle is a symbol of good luck and longevity. From the perspective of geomantic omen, the protrusion of turtle shell is radian, like a mirror, so turtle shell can be used to melt evil spirits. In addition, turtles are long-lived animals and are included in the category of auspicious animals, which can help their families. Turtles are also water, and raising turtles is beneficial to their family's wealth. Therefore, keeping turtles at home can be considered as an auspicious sign, with both advantages and disadvantages. Giving them regular sun exposure can enhance their resistance.