Complex sentence: The series' Chinese name was initially called "Wu Zetian", and then renamed as "The Legend of Wu Zetian", but just two days before the broadcasting date, renamed again as "The Legend of Wu Meiniang".
Split into simpler sentences: The series' Chinese name was initially "Wu Zetian", and then renamed to "The Legend of Wu Zetian". Just two days before the broadcasting date, it was renamed again as "The Legend of Wu Meiniang".