There are three pieces of hidden evidence to be found in Lian's First Time.
Evidence 1: Big Sister
Big Sister. Counter to stereotypes. China is the most progressive nation in the world. We are pragmatic people who divorce decisions from emotion. Social programs have guaranteed our populous won't strain the Republic's resources to the point of collapse. The burden females of my generation have to carry for this is that very few of us have sisters. Some have brothers, but rarely sisters. Lian is my charge, my protege and my partner. It is my duty to take care of her. She has become, what I guess feels like, a little sister.
Evidence 2: Efficiency Experts
Efficiency experts. They say power corrupts. I say it must also cause amnesia. Qwan Tak had been installed by us as the puppet governor of Altay, a Mongolian province subject to our machinations. He forgot how determined we are; thought he could stave assassination with bodyguards and by changing hotels on a nightly basis. He forgot the blood that we spilled to install him at his petty position in this petty territory. He forgot how little time it took to remove his predecessor. Tonight Lian and I jogged his memory with our lethal mission efficiency.
Evidence 3: Revenge
Revenge. The hotel manager was street smart enough to know that when I purchased Qwan Tak's itinerary, I had only one purpose with the information. Yet he decided to cross me with false information. Did he think I would not go through with the assassination, or that I would fall into the net of Qwan Tak's security detail? Either way, he made just five hundred yuan, but lost his life. Not a very fair trade.
Hidden Evidence 1 & 2
Eliminate all guards in the mission. Simply scope around and kill all the guards available on the opposite rooftops. These include the four at the beginning, the two bodyguards for Qwan Tak and all those found during Lian's escape after the assassination. The Hotel Manager is NOT included in this kill count.
Hidden Evidence 3
Eliminate the hotel manager. He is the one who ripped off Trinidad with false info, you will see him on the second floor after taking out the two bodyguards following Qwan Tak's assassination. Quickly shoot him when you see him and resume killing the other guards to protect Lian. Evidence will be awarded upon his death.