Meaning of yún:
云
(classical) to say
Gǔrén cháng zài shūxìn zhōng yún mǒu mǒu.
古人常在书信中云某某。
In ancient times, people often said 'so and so' in their letters.
surname Yun; abbr. for Yunnan Province 雲南省|云南省[Yun2nan2 Sheng3]; cloud; CL:朵[duo3]
Jīntiān wǒ jiàndào le xìng yún de lǎoshī.
今天我见到了姓云的老师。
Today I met a teacher with the surname Yun.
Tiānkōng zhōng yǒu hěn duō měilì de yún.
天空中有很多美丽的云。
There are many beautiful clouds in the sky.
Jīntiān de tiānkōng shàng yǒu xǔduō měilì de yún.
今天的天空上有许多美丽的云。
There are many beautiful clouds in the sky today.
Jīntiān tiānkōng shàng yǒu hěn duō bái sè de yún.
今天天空上有很多白色的云。
There are many white clouds in the sky today.