- 始终不渝 shǐzhōngbùyú steadfastunswerving and unchanging from beginning to end
- 忠贞不渝 zhōngzhēnbùyú unswervingUnswerving in one's loyalty; faithful and constant.
- 坚持不渝 jiānchíbùyú persevereto stick to something without change; to persevere
- 坚贞不渝 jiānzhēnbùyú unwaveringunyielding integrity; unwavering