xué / hǎo / yì / mén / yǔ / yán / fēi / yī / rì / zhī / gōng / xū / yào / cháng / qī / jiān / chí

学好一门语言非一日之功，需要长期坚持。

Mastering a language cannot be done in a single day; it requires long-term persistence.