Our history teacher told us to find 3 inventions from Chicago expo which was EASY!!!!!!! YAY! But I couldn't find the 2 inventions from the 'recent expo in China (Shanghai?)!!!!! I searched but I just couldn't find anything! ><!!!!! PLEASE help! I hav yet to pass if homework late and I'd like to keep it that way for at least this semester! So PLS & THX!