Complex sentence: King Jinpyeong followed in the footsteps of King Jinji by reorganizing the central ruling system, and as many conflicts with Baekje and Goguryeo arose, sent emissaries to improve relations and strengthen ties between Silla and the Chinese dynasties Sui and Tang.
Split into simpler sentences: King Jinpyeong followed in the footsteps of his predecessor, King Jinji, by reorganizing the central ruling system of Silla. Upon the onset of a multitude of conflicts between Baekje and Goguryeo, He sent emissaries to improve relations and strengthen ties between Silla and the Chinese dynasties Sui and Tang.