Complex sentence: He earned prominence for having annihilated and driven away the Ni-Ting-Gae barbarians in the northern provinces, and was a successful general, and became reknown for protecting Joseon borders against Chinese barbarians.
Split into simpler sentences: He earned prominence for having annihilated and driven away the Ni-Ting-Gae barbarians in the northern provinces, and was a successful general. He became reknown for protecting Joseon borders against Chinese barbarians.