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After "500 Days of Summer" completed all its filming, the crew disbanded, and the film entered post-production, with Wang Yang returning to Los Angeles to busily oversee the process.
There wasn't much time left for post-production, as the release date was set for December 23. After accounting for MPAA rating review and copy distribution, which were estimated to take some time, there were just over two months left, so every department had to race against the clock.