Leaving some witnesses behind was meaningless to Tang Xiu. He didn't have the slightest idea to find out about the Golden Shield Special Ability Bureau of the United States. He wasn't, and never would be, a politician. His motive was just pure business; he wanted to make money to buy cultivation resources for his family members to become immortal cultivators in earnest.
Tang Guosheng respected and fully approved of Tang Xiu's judgment at this time. He shook his head to express his opinion that they didn't need to act like that and said directly, "Xiu'er has his own plan. Since he doesn't want to leave anyone alive, we might as well annihilate them completely! Besides, I'm sure the US will stay low for a few years after the Golden Shield Special Ability Bureau suffers such a great loss."