What about unofficial history in the Tang Dynasty?

I think things like unofficial history should be read selectively, because the things recorded in it often involve the privacy of the parties. Since it is private, how can too many people know about it? So we need to find something ordinary. For example, Zhenguan Politicians mainly recorded the political speeches of Yu, Fang and Du Ruhui, as well as some important economic and political measures in the Tang Dynasty. Chang 'an Annals is a local chronicle about some counties. Tai Ping Guang Ji was some legendary novels at that time. Besides, there are many books about diplomacy and geography.