Why Is There Zhao Kuangyin in My Tang Dynasty?

Others who traveled through the Tang Dynasty were either Zhenguan or Kaiyuan. Lin Mo opened his eyes, only to find that he was wearing a crown, a dragon robe, and a court full of civil and military officials kneeling at his feet. Just when he thought he had got the script of the Eternal Emperor, an urgent message came from outside the hall: "Your Majesty, the Song envoy has arrived." "Song Kingdom? Which emperor?" "Zhao Kuangyin." Lin Mo was silent. What does it mean that only half of his Tang Dynasty is left? What does it mean that the Song army has sent troops to Jiangbei? What does it mean that he is not Li Shimin, but the empress of the Southern Tang Dynasty who is about to perish? He is just an ordinary college student studying business administration. He only remembers history roughly. He can't make gunpowder and can't memorize military documents. In the Northern Song Dynasty, the soldiers and horses were strong, fighting continued in the court, and the treasury accounts were in a mess. If you fight hard, you will most likely lose your country. If you surrender, you will have to go to Kaifeng and be a prisoner. Lin Mo looked at the civil and military officials in the dynasty who had their own thoughts, and could only do what he was most familiar with first - accounting, punishing people, decentralizing power, and drawing pictures. As for whether the Tang Dynasty can be saved...