Continuity mistake: When Master Tang is coughing in bed, and Ling is patting him,she is patting him with her left hand in the first shot, in the next shot she is using both hands.
Continuity mistake: At the start when you hear the Chosen One's story, in some shots he has white clothes on, and in other shots he has brown clothes on.
Continuity mistake: When the guy has his whole leg cut off when they are talking about the tiny net, nobody is sitting right by him, but when it shows his leg, you see other legs right by him.
Continuity mistake: Sometimes the back of the Chosen One is shown, and you can tell it's the guy from the last movie.
Answer: Some scenes/shots were taken from the old movie, while others were made specifically for this movie. Additionally, numerous shots were "composited" to place new characters in the old footage.