Tell me about your evaluation of Lu Su in 20 words.

Lu Su is an able man who got on the horse to rule the army and got off the horse to rule the people.

After Battle of Red Cliffs, Lu Su was appointed as a captain of Zanjun. After Zhou Yu's death, Sun Quan adopted Zhou Yu's proposal before his death, and asked Lu Su to lead four thousand troops as Zhou Yu's empress. Due to Lu Su's good management in the army, the army quickly grew to more than 10 thousand people. According to the needs of the political and military situation at that time, Sun Quan appointed Lu Su as the satrap of Hanchang and awarded him a partial general. After Sun Quan defeated Anhui, Lu Su was named General Hengjiang, guarding the land. Later, Lu Su invited Guan Yu, the governor of Jingzhou, to meet him, but failed. In the twenty-second year of Jian 'an, Lu Su died at the age of forty-six. Sun Quan personally mourned for Lu Su, and Zhuge Liang also mourned for him.