Li Lingxin is a military legend. Throughout his life, Li Lingxin never failed on the battlefield. His last fame made any barbarian general who fought with him panic all the time, because in countless battles, no matter how the forces of the enemy and ourselves were compared, the quiet Li Lingxin always found the perfect tactics to defeat his opponent and win the final victory. His famous saying is: "A hundred thousand troops have the tactics of a hundred thousand troops, and a hundred troops also have the tactics of a hundred troops." He actually defeated the army of 24 thousand barbarian herders with a team of 300 people, and only lost 17 cavalry. The barbarians called him "General Lee" in awe. Therefore, for Li Lingxin's opponent, it is often not a question of "whether it will fail", but a question of "how it will fail".

Li Lingxin's tactical genius is closely related to his background. He was born in the Li family of the Imperial Capital. This family has always been famous as an astrologer among the officials of the Imperial Capital, and the education of children began with mathematics. Li Lingxin did not learn the essence of astrology, but was regarded as a mathematician on the battlefield. He can pre-calculate the influence of bow and arrow's range, advancing speed, terrain, wind direction and even temperature on the war situation in a huge battlefield, then think all day and finally make a decision. He will draw some incomprehensible drafts as gobbledygook to help with the calculation. Ji Yang collapsed after reading his draft and never mentioned learning from him again. Su Jinxi tried to ask Li Lingxin to explain his knowledge of war in the palace, but no one could understand Li Lingxin's teaching. When Li Lingxin was a child, he chatted with Chu Daoshi, the director of divination. Taoist Chu said in surprise that Li Lingxin is a very special child. When he entered meditation, his understanding of time, distance and numbers was completely different from that of ordinary people.

But Li Lingxin also has a big weakness, that is, her temper is very slow. Every once in a while, he needs to think for a very long time, and he is most afraid of an emergency war, so he is almost always in front of Su Jinshen, because for Su Like Jinshen, nothing will be an emergency, and Li Lingxin will have time to think slowly and make a decision.

Li Lingxin is a very introverted person. As a deputy sect of the Lions' Tooth Society, his decision-making position has not been well received. He is the youngest in the rickshaw and is regarded as everyone's younger brother, so he is greatly taken care of. Many people think that Li Lingxin wants to fight barbarians, but he lives among a group of brothers who want to fight barbarians, so he also wants to fight barbarians. Of course, this is just a guess. Contrary to his personality, Li Lingxin is a peerless warrior with unparalleled ability to kill. He usually rides a horse, but when he takes the lead in charging, he will jump off his horse. At this time, he is invincible. Later, Saixixi was called "the first person to step into the war in 30 years in Donglu" because there was Li Lingxin in front of him, and the appraiser was not absolutely sure. If Li Lingxin met Saixixi in his heyday, what would be the result of the duel between them.