The assassination of the king of Qin is an extremely dangerous action, and we can't use all methods to ensure complete success, let alone hesitate in action. If Jing Ke holds the only idea of stabbing the king of Qin firmly, then at the moment when the dagger is about to appear, Jing Ke can reach out and stab the dagger into the chest of the king of Qin. It's not the first time that the king of Qin has been stabbed to death before he can react. He was frightened and then stepped forward.
2. Jing Ke has personal ability problems.
After the King of Qin broke free, he ran around the pillar, followed by Jing Ke. I chased around the post several times, but I didn't catch up. After the king of Qin drew his sword, he turned and cut at Jing Ke. At this time, Jing Ke should fly up and kick the sword of the king of Qin, or stab the king of Qin sideways. Even if only the fur of the king of Qin was injured, the poisonous sword was enough to kill him. But Jing Ke failed to escape the sword of the king of Qin, and was cut off by others, followed by the seven swords. This shows that Jing Ke's swordsmanship is not superb enough and his skill is not flexible enough.