Did dinosaurs really go extinct? The answer might not be "yes." Lufeng County in southwest China's Yunnan Province is known as the "hometown of dinosaurs" and "storage of fossils." It has the largest dinosaur graveyard of the Middle Jurassic era where hundreds of dinosaurs were buried. Earlier this year, the skeleton of a juvenile dinosaur from the Early Jurassic was discovered here by a team of paleontologists. Join CGTN's Yang Xinmeng in world dinosaur valley, walk into the enclosed excavation site, and visit the lost empire of dinosaurs.