How do you rate the movie The Great Wall?

After talking about what to see, let's evaluate this work comprehensively. In fact, I believe that for most Chinese viewers, a Sino-American co-production with a name like The Great Wall and such a large investment should be more than a popcorn movie or a mere cool flick. It's just that, in this movie, the story is simplistic about characters and camps to the point of no return. A foreigner, who comes to China from thousands of miles away, uses his excellent bow skills to help the Chinese defend the city, and in the end, saves the country from a crisis, which is really a humanitarian and internationalist spirit. But why did the protagonist do it? What spirit inspired him to do so? This is not clear. Trust is mentioned in the movie, but there are only a few references to trust in the story of the movie. The movie is full of so-called big scenes that overlap and overlap and overlap and overlap, but it lacks the conflict of values, lacks the decision of people under great pressure, lacks the portrayal of the real characters under the masks of the faceless characters.