During
the Ming dynasty, Nanjing was in its prime.
Now we can find the most impressive remains
of the Ming city wall of that dynasty. The
wall is 33 km, the longest city wall in
the world. And it took over 200,000 people
build it during 1366 - 1386. Bricks from
five provinces were used and each brick
has been stamped with the origin, the overseer's
name and rank, the bricklayer's name, and
sometimes the date.
