To the Peiping Railway Station from the gigantic piles of pink masonry which are the towering gates of the Forbidden City, all traffic was cut off. Troops with fixed bayonets lined the road.

Inside the Forbidden City, within a lab-like workshop ... undergoes analysis in a state-of-the-art X-ray diffraction machine. The resulting images, projected onto computer screens, hold clues ...

BEIJING (AP) — It's highly technical work in what looks more like a lab than a museum: A fragment of a glazed roof tile from Beijing’s Forbidden City is analyzed in a state-of-the-art X-ray ...