Due to the subject matter, it was impossible to make this a happy movie. The counter-revolutions that followed the ascendancy of the Chinese Communist government were brutal and senseless--destructive just for the sake of being destructive. So naturally, this isn't a "feel good" movie. I liked how honest the movie was in giving a no holds barred look at this period of time--stretching from about 1953 to 1968.
The negatives about the movie really depend on your frame of reference. For the Chinese audience, much of what was occurring on screen would be easy to follow and keeping track of who is who isn't a problem. However, for Western audiences, this can be quite a chore. I had an easier time than most because I am a history teacher and was acquainted with what was occurring--but the average viewer will most likely get lost from time to time. And, unfortunately, MOST Chinese haven't even gotten the chance to view it as it was banned by their government when it premiered in the early 1990s! So, apart from those Chinese people living in Taiwan or elsewhere abroad, the audience may be rather limited. Because of this, I would love to see the movie along with a documentary explaining the time and events--especially because ignorance about this traumatic time is partly due to the Chinese government's attempts in the past to hide the counter-revolution's excesses.
FYI--although NOT made clear in the movie, the scene where the people were out killing sparrows needs some explanation. Chairman Mao ordered EVERYONE across the nation to beat drums and make a huge racket in order to terrify the birds and keep them flying until they exhausted themselves to death. Perhaps billions of these birds were killed in an attempt to increase crop production (aparently the birds were "capitalist reactionaries" or at least enemies of the state). However, the little grain the birds consumed was NOT a real problem but the insects that the birds ate were. So, as a result of the destruction of the birds, bug populations SKYROCKETED and the crops were decimated. That is why several scenes later people are complaining that there were 3 years of famine.
Also, it seemed to me that it was implied that the reason the one lady quit the army (where she was an actress for propaganda plays) was because she was expected to "put out" for officers. She chose to quit instead and shortly afterwards she was sent to a "re-education camp" as punishment for this.
