Complex sentence: In May 2015, Baekhyun was announced to be starring in an action film titled "Dokgo" alongside actor Yeo Jin-goo, however production of the film was announced to have been cancelled in January 2016.
Split into simpler sentences: In May 2015, Baekhyun was announced to be starring in action film "Dokgo" alongside actor Yeo Jin-goo. However, production of the film was announced to have been cancelled in January 2016.