Man with the Snake tattoo

Shi Lian sits on the edge of her bed and waits for the email to arrive. She is anxious the whole day, worrying if her uncle somehow knew what she is planning. 

She startles as the ping from the phone comes. She looks down at the screen and there it is. The email she is waiting for. 

She opens it without any delay. She reads the email: 

NO UNUSUAL ACTIVITY WAS SEEN. 

FROM COMPANY TO YENSON HOUSE AT 7:09 PM TO HIS HOUSE AT 8:13 PM. 

NOT MET ANY OF THE PERSON UNDER SUSPICION. 

THAT'S THE REPORT FOR TODAY. 

— DUAN

He has this uncanny way of describing the details but nevertheless, he has done a good job on his first day. Her uncle's activities are normal but the one thing that is attracting her attention is the Yenson house. What was he doing there? 

As far as she knows, Yenson House is a type of farmhouse where the upper class goes to have fun i.e., drinks, pool, girls, etc.