Comprehending

"Consider this as a test I tailored to check your temperament. It was exactly because of this test that I ascertained that you are really that man's son. If it were not for your boldness, I even had the thought of disposing of you. Among the six of us, even Blackie or Reddie would have no chance against someone my caliber, so disposing of was something like a dragon squishing an ant with the pinky of its paw," the purple-colored flame proudly praised. 

Yang Lujia, on the other hand, was surprised. He then noticed that the green-colored flame in his hand had already disappeared in his hand. The green-colored flame was perfectly fine and was just settling there with the other flames—even the black-colored flames did not even reveal any killing intent towards him like before. 

Then, what happened back then?