Humanity's engineering capabilities have far surpassed the scale of human activities. To observe the breathtaking entirety of these engineering marvels and reveal the proportional relationship between those massive bridges and the earth, I took photos for them from kilometers high in the sky. In the moment, I can feel the insignificance of humankind alongside the grandeur of human engineering power. Bridges shot: Hong Kong-Zhuhai-Macao Bridge, Shenzhen-Zhongshan Link and Donghai Bridge.