热脸贴冷屁股 (熱臉貼冷屁股) rè liǎn tiē lěng pìgu

rè liǎn tiē lěng pìgu phrase to show warm feelings but meet with cold rebuke; to be snubbed despite showing good intentions
Domain: Proverb 谚语
Notes: (CC-CEDICT '熱臉貼冷屁股')