A white cloud represents an exact number, which is one. There is only one white cloud floating in the sky, and there is no second one. However, white clouds mean more white clouds, and white clouds mean more white clouds floating in the blue sky, which means more white clouds.
Baiyun, a beautiful and magical existence in nature, floats lightly in the blue sky, bringing people endless reverie and good mood. White clouds are as soft and fluffy as cotton candy, and they are gently blown by the breeze and dance.