Why are turtles called Feng Shui turtles?

Turtles are called geomantic turtles because ancient people thought that turtles could communicate with gods and predict good or bad luck, which was a symbol of good luck. In addition, turtles are also closely related to astronomy. As early as the Neolithic Age in Taowenli, people began to use tortoise shells and bone marrow to predict good or bad luck in the future. In the cultural history of 5,000 years, turtles are regarded as sacred creatures, mysterious and magical places of geomantic omen. Thus, the 28-year-old tortoise was given the meaning of geomantic omen and became a geomantic turtle.