to be in the clouds, be on cloud nine ☊ 
chín tầng mây ☊ (1) cloud (2) rattan ☊
mây ☊ every cloud has a silver lining ☊ qua cơ bĩ cực ☊ to cloud over; unhappy face, displeased expression ☊ sa sầm ☊ blue cloud adder of fame ☊ thanh vân ☊ fly, travel on a cloud (of supernatural beings) ☊ đằng vân ☊