Because Li Ling, a teacher in Song Zhenzong, worked hard in her post and always taught Song Zhenzong how to be a wise king, it also enabled the Northern Song Dynasty to recuperate and greatly restored the peaceful life in the past. Among so many prime ministers in the Northern Song Dynasty, only Li Ling really achieved the situation of national prosperity and people's security, so she gained the reputation of "sage".

Li Ling was originally a humble minister in the Northern Song Dynasty. He is not only knowledgeable, but also virtuous, so he was lucky to be chosen as the teacher of the prince by Song Taizong. At this time, Li Ling ushered in a new stage of life, and he did not live up to Song Taizong's expectations. He taught the prince carefully, so he became more and more important, and the prince's words and deeds were also very reasonable, which was greatly influenced by Li Ling.

After Song Zhenzong came to power, Li Ling was naturally promoted to prime minister. Although Li Ling is in a high position, he never engages in cronyism, and he does not reuse anyone who wants to curry favor with himself. This is also his professional ethics, which makes Song Zhenzong unlike many Nuo Nuo-only people. In addition, in the face of internal troubles and foreign invasion in the Northern Song Dynasty, Li Ling also tried his best to improve relevant policies, which helped the Song Dynasty recover its vitality to a great extent. Therefore, Li Ling is perfect in her work and in dealing with people, and it is not an exaggeration to be called a "saint".

However, Li Ling is still very tired at work. When Song Zhenzong learned the news of Li Ling's death, he was in great pain. The mentor who accompanied him to grow up has completely left himself, and the future life path can only rely on himself. After the death of Li Ling, no one dared to speak frankly to Song Zhenzong, so Song Zhenzong began to get carried away, and as a result, the hard-won quiet life was messed up.