Teng is Wang Qi's aide and seems to be an army man himself. He is the only one who actually has any idea what Wang Qi's plans are.

Millions of years have passed since the times of legends, when the worlds of man and gods were still the same. In these times it was the desires of man that moved the world. It is the period of the 500 year war: the Era of Warring States. Kingdom is the story of a young boy who grew into a great general and all the trials and bloodshed that led him there.


The third season of Kingdom. 
 
Following the successful Sanyou campaign, the Qin army, including 1,000-Man Commander Xin, inches ever closer to fulfilling King Ying Zheng's dream of unifying China. With a major geographical foothold in the state of Wei now under its control, Qin sets its sights eastward toward the remaining warring states. 
 
Meanwhile Li Mu—an unparalleled strategist and the newly appointed prime minister of the state of Zhao—has taken advantage of Zhao's temporary truce with Qin to negotiate with the other states without interruption. Seemingly without warning, Ying Zheng receives news that armies from the states of Chu, Zhao, Wei, Han, Yan, and Qi have crossed into Qin territory. Realizing too late the purpose behind Li Mu's truce with Qin, Zheng quickly gathers his advisors to devise a plan to address the six-state coalition army on their doorstep. For the first time in history, the state of Qin faces complete destruction and must use every resource and strategy at their disposal to prevent themselves from being wiped off the map. 
 
(Source: MAL Rewrite)

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When low-born servant boys Piao and Xin set out to become the world’s greatest war generals, they quickly find themselves caught up in a violent struggle between two noblemen plotting to overthrow the King. After Piao is killed protecting the rightful ruler of the kingdom of Qin, Xin sets out on a campaign for revenge that leads him straight into the fire of war. 
 
Now, with a target on his back and an army of enemies standing in his way, it will be up to a boy with no name and a young king without a throne to return order to their war-torn country in this historical action-drama based on the Tezuka Award-winning manga, Kingdom. 
 
(Source: Funimation) 
 
Note: The first episode aired with a runtime of 50 minutes as opposed to the standard 25 minute runtime.

The fourth season of Kingdom. 
 
Following the conclusion of the large-scale coalition campaign, the entirety of China is in a state of economic recovery. The victor of the battle, the state of Qin, is no different. There, the political parties led by Ying Zheng and Buwei Lü continue their inner conflict. Having played the role of king in the coalition battle, Zheng has the trust of the people—but Lü is far from out of the fight. In 18 months, he plans to interrupt Zheng's coming-of-age ceremony. 
 
Meanwhile, a Zhao army numbering 20,000 troops has set out toward Qin. In the royal court, due to the lack of generals capable of responding to the incoming threat, Lü slyly suggests that Zheng take command. However, Cheng Jiao, Zheng's half-brother, volunteers instead. As they grew to trust each other during the coalition battle, Zheng now accepts Jiao as his replacement. 
 
However, the Zhao forces retreat a mere half-day after clashing with Jiao's army. With trouble quickly brewing in the shadows, the internal struggle of Qin is only complicated further. There are only two men Zheng feels he can rely on: Bi, a general who commands 30,000 men; and Xin, the leader of the Fei Xin force. 
 
(Source: MAL Rewrite)

The second season of Kingdom. 
 
A year after the devastating battle against the formidable Zhao, the State of Qin has returned its focus to pursuing King Ying Zheng's ambition of conquering the other six states and unifying China. Their next target is Wei, a smaller state which stands as a geographic stepping stone for the sake of conquest. 
 
Xin, now a three hundred man commander of the swiftly rising Fei Xin Unit, continues to seek out lofty achievements in order to garner recognition for himself and his soldiers, motivated by those previously lost in battle. In the preliminary battles ahead of Qin's invasion of Wei, Xin finds competition in other young commanders who are of a higher social status than him. Back in Qin, the royal palace faces turmoil as opposing factions begin to make their move against Ying Zheng's regime. 
 
With their hands full both abroad and at home, Zheng and Xin must lead the way in this era of unending war, resolved to etch their names in history by creating a unified China. 
 
(Source: MAL Rewrite)