"Heh, for an assassin, you have quite a durable body." The Royal Tiger Police interrogator said as he whipped the Banned Emperor's lackey with a spiked whip and yet the assassin continued to keep quiet.
Despite the highly advanced surveillance technology which China was proud to possess, there was no ID match on this particular assassin. He didn't have any type of fingerprints they could check, no DNA match could be found, and the house which they raided was perfectly clean.
Aside from the failed attempt on Royal Tiger Head Bai Hu, there was no other evidence that pointed towards the Banned Emperor terror group or faction.