I'm an Emotionless Assassin

(In the beginning, you replace Qin Wuyang to assassinate the King of Qin. How can you succeed? After assassinating Qin, he became the best in the world, a young man singing, under one person, wind and cloud, fighting, and martial arts. In every world, he left his assassination legend.) I am an assassin, I don't want money, let alone love! In this era where the main character suddenly appears, the heroine is all-powerful, and the supporting characters have no way to survive, I can be regarded as a breath of fresh air! What I can do is solve everything for the employers who pay for it! Xia Chenglin: What! This mission is to deal with a protagonist who does whatever he wants? Sorry, I won't accept it unless you pay more! Yes, I am such a real-life assassin and the number one assassin in the universe!