Complex sentence: Miscellaneous Morsels from Youyang was a collection of stories he had gathered, published approximately 853 when he returned to Chang'an after finished his serving as the Governor of Jizhou, and in it was Yeh-Shen, or the story we know as Cinderella.
Split into simpler sentences: Miscellaneous Morsels from Youyang was a collection of stories he had gathered and published approximately 853, shortly after he returned to Chang'an after his term of acting Governor of Jizhou. In this compilation of stories was Yeh-Shen, the story we know as Cinderella.