Complex sentence: Zhi-sheng said this book was someone bring back from Guangxi to Luoyang during Kaiyuan era, but he gave two different accounts in two different books, which were published in 730 CE. There-after the is not mentioned again until the Song Dynasty.
Split into simpler sentences: Zhi-sheng said this book was brought back from Guangxi to Luoyang during the Kaiyuan era. He gave two different accounts in two different books, which were published in 730 CE. There-after the is not mentioned again until the Song Dynasty.