Complex sentence: The Bruneian Empire was founded in the early 7th century on the island of Borneo in Southeast Asia with the Chinese referred it as Po-ni, as both the Borneo and Brunei were usually transliterated as Po-li and Po-ni in Chinese texts.
Split into simpler sentences: The Bruneian Empire was founded in the early 7th century on the island of Borneo in Southeast Asia. The Chinese referred to it as Po-ni, as both the Borneo and Brunei were usually transliterated as Po-li and Po-ni in Chinese texts.