There is a gap between the two
Chinese idiom, Pinyin is Q í J ì Gu ò x ì, which means time flies. It comes from Zhuangzi's journey to the north.
Idiom usage
Time flies by
Analysis of Idioms
Synonym: Baiju Guoqiao
The origin of Idioms
Chuang Tzu's journey to the North: "life between heaven and earth, if Baiju's fault, but suddenly."
Idiom explanation
How time flies.
There is a gap between the two
the difference between heaven and earth - xiāo rǎng zhī bié
be left with nothing whatsoever - liǎng shǒu kōng kōng