Nancy Tartaglione International Box Office Editor/Senior ContributorEXCLUSIVE: As the rolling process of cinema reopenings continues across various markets, IMAX has recently enjoyed strong grosses with local-language movies in Asia as well as the reissue of Christopher Nolan’s Interstellar in China. This week in the Middle Kingdom, it’s set to have a particularly vibrant frame with war epic The Eight Hundred.