用功 /yònggōng/ meaning in English

diligence [diligences]▼(qualities of a hard worker, including conscientiousness, determination, perseverance)
noun
[UK: ˈdɪ.lɪ.dʒəns] [US: ˈdɪ.lə.dʒəns]

hardworking▼(taking their work seriously and doing it well and rapidly, see also: industrious)
adjective
[UK: hɑːd.ˈwɜːkɪŋ] [US: ˈhɑːr.ˌdwərkɪŋ]