Complex sentence: Shen Yun has garnered generally favourable reviews for the artistry of it performances, although the inclusion of political and religious content--such as acts which depict the suppression of Falun Gong in China Mainland--has drawn mixed reactions from critics.
Split into simpler sentences: Shen Yun has garnered generally favourable reviews for the artistry of it performances. However, the inclusion of political and religious content--such as acts which depict the suppression of Falun Gong in China--have drawn mixed reactions from critics.