Looking for answers (I'll tell you a story)

Please give a suitable answer

There was a defender of the late Warring States period, who loved his country very much, so he had been practicing martial arts and practicing swords since he was a child, and he was Jing Ke.

At that time, he lived in the era when the Qin state merged with the Six Kingdoms. Jing Ke saw that the monarch of his country was only concerned with pleasure, regardless of the danger of his own country. He proposed to the monarch that "six countries unite and jointly resist the enemy", but the monarch did not accept it. Jing Ke was very disappointed in the monarch.

Later, Jing Ke left his country and went to the Yan kingdom to vigorously publicize the joint anti-Qin (hezhong) strategy, and also met a musician, who had similar personalities, were patriotic, and were worried about their country. When they heard the news that the State of Qin had destroyed the State of Zhao, they were very sad.

He and the musician immediately composed a sad song, and Jing Ke sang with the musician loudly with tears in his eyes to express his hatred for the Qin state and his disappointment in the monarch of the dynasty. They played and sang as if there were only two of them in the world and no one onlookers existed.

I won't talk about what happened later, but we actively used an idiom to name the story.

How about another idiom solitaire at the end?