0:01In a courtyard near the
center of the Forbidden
0:03City, archaeologists
stumbled on an unexpected
0:07clue. The foundations of
a now vanished building
0:16Alternating layers of
compacted earth and
0:19broken bricks once
supported a massive
0:22structure. But further
down lies evidence of an
0:28Fragments of bottles,
tiles and bowls dated to
0:32the time of Mongol rule.
0:34Could this seemingly
random assortment of
0:37trash finally reveal why
the Forbidden City was
