Introduction to the Qingyu Stone: The Qingyu Stone is one of the four unique features of Guifeng. It rises from the ground and is slender and steep. Resembling a lifelike toad. This toad is half a day high, with its mouth open to the sky. Whenever the weather turns from sunny to rainy, clouds and mist will surround the toad peak, and a halo will appear, and then raindrops will fall, hence the name.