云泥之别 yún ní zhī bié

DEFINITIONS

  1. a world of difference; a big contrast; as different as heaven and earth

CHARACTERS

云 yún say, speak; clouds
泥 ní mud, mire; earth, clay; plaster
之 zhī marks preceding phrase as modifier of following phrase; it, him her, them; go to
别 bié separate, other; do not