千里鹅毛 (千里鵝毛) qiān lǐ émáo

qiān lǐ émáo set phrase goose feather sent from afar / a trifling gift with a weighty thought behind it
Domain: Idiom 成语
Notes: Also written 千里送鹅毛 (CC-CEDICT '千里鵝毛')