As a Dream Master, it was basic fundamentals to be able to distinguish one's emotions.
Fang Yuan was able to come to the conclusion based on Black Jack's facial expressions and his increased blood flow and heartbeat—he was lying!
"I'll talk! I'll tell you everything!"
Feeling the pain of losing his hand, Black Jack had an expression of agony and shouted all of a sudden, "It was my master who ordered me to do so!"
"The setup in the Bay of Pigs was also done by him?" Fang Yuan curiously asked.
If it was able to do that, then Black Jack's backer would be Flaming Evil Demon Seth.
"I don't know… All master did was instruct me to attract Demon Hunters there!" Black Jack spilled the beans, like an inverted bamboo tube that had beans falling out.
"Then, how do you contact it?" Fang Yuan moved Starry Night over Black Jack's other hand.
"In the secret room—there's a golden pot that allows me to link up with my master!"