Something along the line of 3 brothers, get to a meet girl to marry if they are wise. The youngest chooses to carry food, a foolish brother carries an empty bag but it fills up as trash is put into it. Its been at least 35 years since I heard it in library. Its not the typical Chinese brothers with powers books.
Stump the Bookseller
New format, same book stumper solving.
The only one I can think of is Blockhead Hans, written by Hans Christian Andersen. Hans and his two brothers set off to marry the princess, who has promised to marry the wisest person. While traveling, Hans collects a dead crow, an empty shoe and mud. As it happens, his two brothers blanked out upon seeing the princess, while Hans cleverly used his collected garbage in his replies to her.