That's right, Yang Yi treated the dog as a hostage.
Yang Yi would never kill a person, the consequences of killing Martin Howard would be too grave for him to bear, and even if there were no consequences, he wouldn't kill an innocent person just to use a supercomputer.
Of course, Yang Yi also wouldn't kill a dog. Since he wouldn't kill Martin Howard, he wouldn't kill Martin Howard's dog either, the impact would be too detrimental, and why kill a possibly small dog?
So Yang Yi was just trying to scare people. He wanted to create the illusion that to show his determination he would kill Martin Howard's dog first, and do it immediately.
Martin Howard was shocked, looking at Yang Yi, momentarily at a loss for words.
After a long while, Martin Howard said tremulously, "No, you can't do that."
"I can, of course, I can. Do you want to see now? Okay then!"
Martin Howard stood up subconsciously.