Complex sentence: There is a folktale that Sima Guang broke a great ceramic container where a boy was drowning, titled "Sima Guang Da Po Gang," which could simply be a play on his name for rhyming.
Split into simpler sentences: There is a folktale that Sima Guang broke a great ceramic container where a boy was drowning. It is called SIMA GUANG DA PO GANG, which could simply be a play on his name for rhyming.