Three Blades wrote: I was thinking the same thing, but not because of the sword. In my case it was because he leaves his bag at the come over guest house (I think you can even see it if you check the closet). Yet, when he follows Xiuying to her room, he never goes to retrieve it, yet he still has it with him later.
That bugged me too. Additionally, when he jumps into the river to save Shenhua, he drops the bag beforehand. Then, after they've presumably gone at least a quarter mile downstream, he suddenly has his bag again.