Complex sentence: Its emergence ushered in the second Golden Era of Chinese drama, but by the early twentieth century it had nearly disappeared, which was only exacerbated by deliberate attempts to suppress it during the Cultural Revolution.
Split into simpler sentences: Its emergence ushered in the second Golden Era of Chinese drama. However, by the early twentieth century, it had nearly disappeared, which was only exacerbated by deliberate attempts to suppress it during the Cultural Revolution.