Car dust
It's a metaphor for running around and life is turbulent.
Idioms and allusions
[source] the first fold of Wu Changling's Dongpo dream in Yuan Dynasty: "when I think about it, it's like the morning bell and the evening drum. When I look at it, it's just like the clouds and shadows in the air."
Discrimination of words
[usage] used as object and attribute; used in wandering life.
Separate interpretation of words
Horse foot: 1. Horse foot. 2. The strength of the horse. 3. Refers to a flaw. Car dust: 1. The dust raised by the car. It's like running hard. 2. Refers to a bicycle. It is also used in honorific terms.
Chinese PinYin : mǎ zú chē chén
Car dust
have all come within shooting range. jìn rù gòu zhōng
put the trivial above the important. qīng zhòng dào zhì
break the literature into pieces and take one paragraph or few sentences. duàn zhāng jié jù
fight a hundred battles , win a hundred victories. bǎi zhàn bǎi shèng