Li Di, a prominent figure in the Song Dynasty, held the position of Minister of State due to his exceptional abilities and contributions to the empire. His appointment as a Minister of State was a testament to his expertise in various fields, including military, political, and economic matters. Li Di's role as a Minister of State was crucial in shaping the policies and stability of the Song Dynasty.

Li Di's appointment as a Minister of State can be attributed to several factors. Firstly, his military prowess was evident during his campaigns against the Jin Dynasty, where he played a significant role in securing victories for the Song. His strategic acumen and battlefield leadership were highly regarded, which earned him the trust and respect of the imperial court. Secondly, Li Di's administrative skills were exceptional, as he was able to efficiently manage the empire's resources and implement policies that promoted economic growth and social stability. His ability to navigate complex political landscapes also contributed to his rise in the ranks.

Historical records indicate that Li Di's influence on the Song Dynasty was substantial. For instance, during his tenure as Minister of State, he was instrumental in implementing the "Three Policies" (San Ce), which were a series of reforms aimed at strengthening the empire's military, economic, and political structures. These reforms were successful in stabilizing the Song Dynasty and extending its rule for several more decades.

Furthermore, Li Di's contributions to the Song Dynasty were not limited to his role as a Minister of State. He also played a pivotal role in the development of the empire's legal system, which helped to ensure a fair and just society. His efforts in this area were recognized by the imperial court, which further solidified his position as a trusted advisor and statesman.

In conclusion, Li Di's appointment as a Minister of State in the Song Dynasty was a result of his exceptional abilities in various fields, including military, political, and economic matters. His strategic acumen, administrative skills, and political savvy were crucial in shaping the policies and stability of the empire. Historical records and data support the notion that Li Di's contributions to the Song Dynasty were significant, making him a pivotal figure in the empire's history.