I think the most hard part is the name of author and name of place. For example, I don't know where is Zhyua. As a Taiwanese, we normaly learned the biggest event of offical dynasties of China; normally, the most important dynasties will show on list of text book. So, the Jin Dynasty is not an important period compared with Tang or Han. Thus, I need to check wiki.
But, really, this paragraph is not difficult. There is only one information that the author wanna say. Other parts are all biography to provid: this is true. So, the actien education is very serious in literature references writing in Chinese system.