Until the last week of 2021, the highest-grossing film of the year and the highest-grossing film in Chinese cinema history as of 2021.
The most expensive film ever produced in China as of 2021, with a budget of $200 million.
Original directors for this film include Roland Emmerich, but the production was delayed by COVID for a whole year, so he became unavailable. Andrew Lau was considered but in the end Dante Lam replaced him.
The film was banned in Ontario and British Columbia in Canada and some states in US including New York due to provocative threat against American citizens.
In the battle scenes the Americans are carrying there weapons at the low ready which did not happen until the 1990's.