a loyal heart; utter devotion; wholeheartedness ? 千難萬(wàn)險(xiǎn)何所懼？～為人民。Why should we be afraid of numerous dangers and hazards?|We serve the people with wholeheartedness.
一寸丹心yī cùn dān xīn
丹心：赤心。指一片赤誠(chéng)的心。a heart of pure loyalty, a loyal heart