The story of "Guangling" is set in the Northern Song Dynasty. This was a prosperous and sentimental era, extremely poetic, but restless - the world was covered with autumn colors. In the north, the dragons and tigers of the Khitan and Liao Kingdoms sat on one side, and in the northwest, Xixia stood proudly. In the southwest, Dali had good weather, peace and prosperity, and the vibrant Jin Dynasty was nurtured at the junction of Song and Liao. The rulers of the Song Dynasty were still singing and dancing in the Central Plains. This is an era suitable for heroes. The story of "Guangling" begins with Song Taizong Yongxi's Northern Expedition and his defeat at the Liao Dynasty.