How China Built the World’s Biggest Train Station on Top of a Mountain

Welcome to Chongqing East Station: China's $7.8 billion high-speed rail megaproject. 1.22 million square metres. 40,000 peak workers. A 16,500-tonne steel tube truss roof assembled on the ground and hydraulically slid 57 metres upward onto 41-metre tree-shaped "Huangjue" columns. This is the complete engineering story. In this documentary: • How 40,000 workers built a 1.22M m² station in just 38 months on a mountain • The sliding assembly method — why the 16,500-tonne roof was built on the ground first • The Huangjue tree columns — 41-metre branching steel structures designed for earthquake resistance • Stainless steel cladding installation at 57 metres above a mountain slope • Why Chongqing East Station is now the largest railway hub in the world • The high-speed rail network connecting Southwest China to 14 major cities