It's Zhuge Liang.
"the Three Kingdoms, divided, have been bound by his greatness, the Eight-Sided Fortress is founded on his fame?" The full text of Eight Arrays written by Du Fu, a poet in the Tang Dynasty, is as follows:
the Three Kingdoms, divided, have been bound by his greatness, the Eight-Sided Fortress is founded on his fame.
beside the changing river, it stands stony as his grief, that he never conquered the Kingdom of Wu.
Translation:
Among the three kingdoms, Kong Ming's exploits are the most outstanding, and his creation of the Eight Diagrams Array is even more famous throughout the ages.
despite the impact of the river, the stone remains the same. The thousand-year-old regret lies in Liu Bei's blunder to swallow Wu.
This poem was written in the first year of Tang Daizong Dali (766). The first two sentences of this poem praise Zhuge Liang's great achievements, especially his military talents and achievements; The last two sentences express regret that Liu Bei lost his teacher when he swallowed Wu and ruined Zhuge Liang's great cause of uniting China with Wu Kang and Cao Cao.
Extended information:
Information of Zhuge Liang:
Zhuge Liang (October 8, 181 -234) was born in Yangdu, Xuzhou (now yinan county, Linyi City, Shandong Province), the prime minister of Shu during the Three Kingdoms period, an outstanding politician, strategist, diplomat, writer and calligrapher.
In his early years, he went to Jingzhou with his uncle Zhuge Xuan. After Zhuge Xuan's death, Zhuge Liang lived in seclusion in Longzhong. After Liu Bei visited the cottage, Zhuge Liang was invited, and Sun Lian resisted Cao, and Cao Jun was defeated in Battle of Red Cliffs. Formed the trend of the three kingdoms, and seized Jingzhou.
in the 16th year of Jian' an (211), Yizhou was captured. Then he defeated Cao Jun and won Hanzhong. In the first year of Zhangwu in Shu Dynasty (221), Liu Bei established the Shu-Han regime in Chengdu, and Zhuge Liang was appointed as the prime minister to preside over the state affairs.
Liu Chan, the queen of Shu, succeeded to the throne, and Zhuge Liang was made the marquis of Wuxiang, leading Yizhou as a shepherd. Diligent and cautious, big and small political affairs must be handled personally, and rewards and punishments are strict; Alliance with Dongwu to improve relations with all ethnic groups in southwest China; Carry out the policy of reclaiming farmland and strengthen combat readiness.
Six northern expeditions to the Central Plains, mostly with grain. Eventually, due to overwork, he died in Wuzhangyuan (now in Qishan, Baoji, Shaanxi Province) in the twelfth year of Jianxing, Shu, at the age of 54. Liu Chan made him a loyal marquis of Wu, and later generations often called Zhuge Liang by marquis of Wu.
Baidu Encyclopedia-Eight Array Map
Baidu Encyclopedia-Zhuge Liang