well all you have to do is be lubu's force and dont kill any officers ones with names over them and wait till gan yu gets red hare at xia pi and when he does that is when the real battle begins but yes this works but gan yu is super strong and you might want to play it on 2 player and when you kill gan yu you might want to have the event thing on because it tells you that you did it wright and it will tell you where the item is