The Northern Song Dynasty Poet's Geography and Societies in the Liao Dynasty Territory

Ouyang Xiu, Su Song, Su Zhe, the Northern Song Dynasty's poets, wrote down some poems for travel notes during as the emissary to the Liao (Qidan) Dynasty. These poems recorded the route and information on the way, so it provided lifelikeness and count historical materials to understand the environments and society in the Liao Dynasty, especially Su Song's poems was most important works.