千里送鹅毛，礼轻情义重
1. A goose feather as a gift from one who lives a thousand li away itself is only a trifle, but conveys deep affection.
2. A present, though trifling, is accompanied with sincere wishes.
3. To send the feather of a swan one thousand li——the gift in itself may be insignificant, but the good will is deep.
