英文關鍵字
gansu
lanzhou
northwest
yellow
river
provincial
capital
western
cities
tourism
promotional
videos
bridges
mother
waterwheel
sunrise
sunset
night
scene
morning
glow
clouds
aerial
time-lapse
baita
mountain
zhongshan
bridge
iron
city
buildings
residential
traffic
flow
silk
road
vista
panorama
tianfu
sand
palace
located
china
unique
landform
must-see
place
tourists
belongs
danxia
formed
100
million
years
crustal
movement