Although it feels like a bad copy of 'Jurassic Park' at the very start, the movie soon shows its unique side. The best thing about the film is without doubt the action, as it brings adrenaline. Furthermore, there is some truth to the story - facts about the Great Wall have been greatly observed before the making of all this. For instance, the barracks were mentioned and shown, although for plenty of seconds. Matt Damon also puts in a great performance as William; he lived up to my expectations for sure. However, I was dreaming the whole time for Luhan to have a little more significant role. If you're planning to watch this film because of him, do not lose your time.