千里鹅毛

qiān lǐ é máoqianliemao

1. goose feather sent from afar (idiom); a trifling gift with a weighty thought behind it
2. also written 千里送鵝毛|千里送鹅毛[qian1 li3 song4 e2 mao2]

Study it in Yanamino