Qiu Tu's idea was simple, yet audacious.
"Yan Chen is planning to claim the Scarlet Widow was an assassin sent by the United Front, right?"
Then he would go along with him, accept this "setting," and then "magnify" it.
The United Front wanting to bring chaos to Xinjie City by sending an assassin to kill Qiu Tu, the Head of the Political Department, indeed sounded plausible.
But then again, if the United Front could be so heartless as to attempt an assassination within the Xinjie City Investigation Bureau...
Well, after their attempt on Qiu Tu failed, and Yan Chen's forces destroyed their hideout, wouldn't it be reasonable for them in desperation to send an elite Special Warfare Squad the very next day to assassinate Yan Chen?
Yan Chen had stated in front of everyone the previous day that the assassin was sent by the United Front.
So the next day, if he was attacked by the United Front and the captured assassins were all its members, who else had any right to question it?