The literal translation of the title of this movie is: Celestial Disaster.
There is a hidden message that is easily missed but rather significant, the current Chinese election process. The significance of this easily missed message is that the election process currently practiced in China simply does not give people much choice because there are not enough candidates allowed to compete for the same posts.
Although all posts are open to election, the number of candidates are severely limited. For example, at the national election, only 110 candidates are allowed to run for every 100 posts, at provincial level, only 120 candidates are allowed to run for every 100 posts, at regional level, only 130 candidates are allowed to run for every 100 posts, and at the municipal level, only 140 candidates are allowed to run for every 100 posts, and at the county level, only 150 candidates are allowed to run for every 100 posts.
This problem of limited candidates severely limited people's choices, and it is certain that even if our protagonist is elected to the post, he would not feel any better. But obviously, this part cannot be shown due to the governmental censorship.