Continuity mistake: In the final scene in the cave, the protagonist walks under the rain and becomes wet. After the whole poisonous needle thing, the camera cuts back to her and she is completely dry. (01:41:15)
Continuity mistake: In the scene in the cave where Jen's hands are tied the loose ends of the knot change from shot to shot. (01:01:20)
Continuity mistake: In the scene where the Policeman, his daughter and a guard fight Jade Fox the policeman throws a disc. Jade Fox spins around in mid-air to avoid the disc, here you clearly see the disc fall to the floor, but in the next shot Jade Fox is holding the disc again. (00:36:20)
Answer: It is an open question. Interpretation of the last scene is really left to the audience. But to those of you who completely missed the whole point of the jump, it refers to the "Legend of the Mountain" as told to Jen by Lo "Dark Cloud". He told her that if a person makes a wish and jumps from the mountain, the wish will be granted and, occasionally, the jumper's life will be spared. "Crouching Tiger, Hidden Dragon" is actually a fourth book in the series of five books. In the book, Jen survives the fall, but never returns to Lo, fearing her parents shame and prosecution. Popular opinion seems to be that Jen was in fact in love with Li Mu Bai and the jump was an attempt of escaping the live lover towards the dead one.