Using tea to make bricks? Could such a thing be true? Apparently so! Pu'er tea from southwest China's Yunnan Province is not only good for drinking but also as bricks. The tea bricks are used to build pillars that form part of the structure and decor of a century-old courtyard house in Beijing. Let's check it out! CGTN is launching the Cup of Tea challenge to celebrate the 10th anniversary of the China-proposed Belt and Road Initiative. Invite your friends and have a cup of tea!