The background of missionary work in Tang drama

At the end of the Warring States, Qin was the most powerful of the vassal states. The King of Qin wanted to unify China, which intensified a series of foreign annexation wars. In 230 BC, Korea was destroyed and Wei was annexed. Anling is a small country of Wei, which was already in jeopardy. The king of Qin thought that as long as he threatened by diplomatic means, he could fool Anling without a single soldier. Tang Ju was sent to Qin by An Lingjun. In the case of Qin Wang's provocation and threat, he did not fear the threat and went head to head. Finally, he bravely defeated the king of Qin and successfully completed his mission.