The Sakyamuni Pagoda in Yingxian County, north China's Shanxi Province, is the oldest and tallest wooden pagoda in the world. It's known for its architectural distinction – the entire structure was put together with mortise and tenon joints without using a single nail. 

The pagoda miraculously withstood wars, earthquakes, rain and wind over the past 1,000 years. However, it started to lean decades ago and is now in urgent need of repair, which has remained a mission impossible, challenging experts across the country. Follow CGTN's Hu Chao to take a look at this miraculous pagoda.