Miniature buildings built to preserve skill of ancient Chinese architecture (4)

Ding Wuming cleans a miniature Chinese bridge at his studio in Lanzhou, capital of northwest China's Gansu Province, June 17, 2015. Ding Wuming was born in a carpenter family and began to learn woodworking since 17 years old. To preserve the skill of ancient Chinese architecture, Wu and his 7 apprentices built more than 90 miniature buildings. (Xinhua/Fan Peishen)