Recasting the Song Dynasty

The male protagonist Zhao Yun, Emperor Lizong of the late Southern Song Dynasty, inherited the gentle world of Zhu Yunwen, Emperor Jianwen of the Ming Dynasty, and absorbed the ruthlessness and courage of his rival Zhu Di. He also respected his grandfather Zhu Yuanzhang's advantages of attaching importance to the people, hating corruption, bullying foreigners, perseverance, and being good at recruiting talents. He also absorbed the original concept of valuing cultural upbringing and governing with cultural doctrines. How should he use his familiarity with the historical trends and major event nodes of why the Southern Song Dynasty collapsed, and identify loyalties and various conspiracies in advance, to gain a foothold in the competition among the prime minister, relatives, and royal power, prolong the life of the precarious Song Dynasty, and achieve the last historical comeback?