wind power
風力
autumn color
autumn landscape
autumn on the dam
birch
birch forest
blue sky
blue sky and white clouds
chengde
cloud
electricity
energy
environmental protection
fall
fan
generator
grassland
green energy
hebei
hills
line
mulan paddock
new energy
on the dam
paddock
power generation
power grid
prairie tianlu
public utilities
scenery on the dam
street light
turbine
white birch
wind
wind energy
wind farm
wind power grid
wind turbine
windmill