Complex sentence: Before setting out for Bianliang, the capital, Lin passes the word to set William free, with Wang telling him to tell the outside world about the danger about to come, but William decides to stay and boards the last balloon with Peng and Wang.
Split into simpler sentences: Before setting out for Bianliang, the capital, Lin passes word to set William free, with Wang telling him to tell the outside world about the danger about to come. However, William decides to stay and boards the last balloon with Peng and Wang.