Complex sentence: The Tang Dynasty (618 CE--907 CE) of ancient China witnessed many advancements in Chinese science and technology, with various developments in woodblock printing, timekeeping, mechanical engineering, medicine, structural engineering, cartography, and alchemy.
Split into simpler sentences: The Tang Dynasty (618 CE--907 CE) of ancient China witnessed many advancements in Chinese science and technology. There were various developments in woodblock printing, timekeeping, mechanical engineering, medicine, structural engineering, cartography, and alchemy.