quǎn​mǎ​zhī​láo

faithful service

犬马之劳 (犬馬之勞) quǎn​mǎ​zhī​láo
faithful service idiom
the service of a dog or a horse; serving someone with complete loyalty and devotion, often used as a humble offer of service

Frequency

Movie subtitles
0.210 per million appears in 0% of films
Written text
0.077 per million

Sources

Definitions
CC-CEDICT