One of Ten Strange Wonders of Shaanxi - People use bricks as pillows

In Shaanxi, when it becomes extremely hot in summer, peasants would rather rest their heads on a brick or a stone than use a conventional pillow when lying down for the night. Local people sometimes refer jokingly to this way of going to sleep as something that is even more precious than gold, a testament to their ardent love for this strange habit.

Natives in Shaanxi tend to have a flat spot on the back of their heads, which some people believe has something to do with their ancestors' habit of using a brick or stone as a pillow.