Other mistake: When Crickie is typing the letter for Mushu he has ink on his feet yet when he jumps on the table to wipe off his feet there aren't any ink footprints where his foot was.
Other mistake: In the scene where Mulan ties up her hair after she has already cut it, she just wraps the ribbon around her hair and pulls. The way she did it would make her hair fall out.
Other mistake: During the song "A Girl Worth Fighting For", Yao has made several excellent snowmen of women. But the army was marching by, and he wouldn't have had nearly enough time to make them.
Other mistake: When Mushu is getting Mulan ready he ties her hair up, but he never makes a knot so how could it hold her hair up?
Answer: They were weights that he made everyone use to try to get the arrow. It's unknown how heavy they were but they must have been heavy enough to even make a strong guy like Chien-Po fall to the ground.