archaeology
artifact
barrack
barrier
beacon
beijing
border
boundary
brick
china
chinese
civilization
construction
corridor
defence
dynasty
earth
emperor
far east
fortification
fortress
garrison
great
heritage
historical
history
infrastructure
jinshanling
kingdom
long
masonry
military
ming
mountains
nomad
nomadic
oriental
peking
protect
qin
ruin
silk road
soldier
stone
structure
tower
wall
war
watch
world