Video of natural snow pile formation goes viral

The piles of snow are almost the same size, and each one sits in the middle of a paving brick. Because of their shape and size, some netizens say they resemble steamed buns called "mantou," which are popular in northern China. Bian Yun, an expert with China's Climate Bureau, said the effect was due to the difference between the ground and air temperatures, and how the water seeps through the cracks into the ground.