lù tiān
outdoors
al fresco
in the open
xiè lù tiān jī
to divulge the will of heaven (idiom); to leak a secret
to let the cat out of the bag
huáng tǔ bù lù tiān
a slogan used in reference to a project to improve greenery in some parts of Northern China
lù tiān sù yíng
camping in the open
living outdoors
lù tiān duī zhàn
open-air repository
open-air depot