Xiānbèi men wèi guójiā de fāzhǎn zuòchū le jùdà gòngxiàn.
Our forefathers made great contributions to the country's development.
Tips
usage
先辈 is more formal and respectful than 祖先 (ancestors in a genealogical sense). It often refers to previous generations who achieved something noteworthy, not just blood relatives.
