The literary type of regional histories (zaiji lei 載記類) is a sub-category to the literary category of historiography (shibu 史部) in the collectaneumSiku quanshu 四庫全書. The regions concerned were often seen as a competitor to the righteous dynasty. These can be states like Wu 吳 and Yue 越 from the Warring States period 戰國 (5th cent.-221 BCE), or the Sixteen States 十六國 (300~430) from the Eastern Jin period 東晉 (317-420), or the Southern Tang dynasty 南唐 (937-975) during the Five Dynasties period 五代 (907-960). The largest part of the books in this section are neutral historical descriptions of certain regions, like the Huayang guo zhi 華陽國志, a history of early Sichuan and the region of Hanzhong 漢中. Two books in this section, the Chaoxian shilüe 朝鮮史略 and the Yueshilüe 越史略, are descriptions of foreign states (Korea and Vietnam, respectively). The section of regional histories in the Siku quanshu includes 23 books.