
Because Su Bei's reaction when he saw Ming Huai's corpse was not sad, just surprised especially then Su Bei returned to the scene to take Ming Huai's money.
After that Xiao Lu put Ming Huai's phone in Si Yuan's locker to scapegoat Si Yuan. But what he did not suspect, the police instead released Si Yuan.
"Su Bei, I'm the only one who really loves you. I'm the only one who really wants to be with you, you know?"
"You all love him too much. But on the contrary, he doesn't love all of you" Yao Yao said.
Xiao Lu was angry to hear that, he immediately attacked Yao Yao while shouting and insisting that Su Bei loved him.
Reflexes, Yao Yao instantly retreated away but instead fell tumbling about. Jin Yan acted quickly to twist Xiao Lu and stop his action.
The police grabbed him and took him to the police station. Su Bei was also arrested and several people were watching this commotion.
Anxious, Jin Yan directly carried Yao Yao without caring about the people who were looking at them. Yao Yao was embarrassed by the many people and asked to be taken down but Jin Yan refused.
Jin Yan placed Yao Yao on Andy's seat and instantly saw the bruise on Yao Yao's head and ankles. Andy also took part in anxious and direct lectures at length about the wound and how to treat it.
Jin Yan said that the bruise on his leg was not as big as the one on Yao Yao's head. Yao Yao asked if that would make him stupid?
"No problem. If you're stupid, you'll still have me. My IQ is 180" said Jin Yan.
Just as they were about to head home, Yao Yao immediately let out a wink. Jin Yan knew that Yao Yao must have been looking for the flower cannibal who had been stalking him all along.
Not wanting to make Yao Yao anxious, Jin Yan told Yao that the person who had been following him had already died.
Arriving at the apartment, Jin Yan again carried Yao Yao up to his room. He then went to his own room to pick up some ice packs then returned to Yao Yao's room and helped Yao Yao treat his bruise with the ice.
Yao Yao then asked Jin Yan to continue their conversation earlier, about what exactly the flaws in Xiao Lu's statement were. Jin Yan said that when someone lies they will make a very clear and flawless statement.
For humans, the thing that affects memory is emotion rather than time or repetition. For example if today Yao Yao Yao told her friend about what she felt today, how would Yao Yao say it?
"When I was chased by Huo Xiao Lu, I fell down. It hurts so much. About 9 o'clock..."
"Stop. Did you realize it? When you think back to the time when you fell, the first thing you remember is the part that deals with emotions. You chased Xiao Lu, sick. This is because the emotions dictate your thoughts, not the chronological order in which they occur"
So if a good friend is killed, it must have created a big emotional impact on the girls. Even if they are being questioned by the police, it is their strong feelings that they will remember. But not so with Xiao Lu.
In Xiao Lu's statement, he mentioned very clearly at what time he did what. For example, he woke up at 9 pm and at 11, his two roommates returned to the dormitory and then at 11:30 the clerk checked all the rooms.