恪守不渝 (kok3 sau2 bat1 jyu4) — unswervingly abide to sth. one has agreed on or promised in Cantonese
kok˗₃恪sauˊ²守batˉ¹不jyuˎ₄渝Mandarin Pinyin: ke 4shou3 bu4 yu2
Meaning of 恪守不渝
noununswervingly abide to sth. one has agreed on or promised
nounto adhere strictly/ faithfully to, and never change