The red BMW M6 came to a small neighbourhood and Liang Si-Yao parked her car, then entered an apartment building. A ratty-tatty red Polo entered the neighbourhood after she went into the building. 

Xia Lei wound down the window and saw Liang Si-Yao enter the apartment building. He alighted too and entered the building. 

Xia Lei used his left eye’s zoom-in ability in the stairwell and Liang Si-Yao’s footprints appeared. He was familiar with everything about her, including her footprints. He followed these footprints to a door on the third floor. Liang Si-Yao had entered this door. 

Liang Si-Yao had never mentioned this place and Xia Lei had never been here.  

Xia Lei’s left eye twitched and the tightly-shut door disappeared before his left eye. 

This was not a flat one lived in. Several pieces of medical equipment like microscopes, analysis apparatus and so on were in the flat - it looked like a small science laboratory. 

In the room, Liang Si-Yao took out the container with his condom and squeezed the liquid in it in a glass test tube. She then put the glass test tube in a piece of equipment and the piece of equipment started spinning. 

Xia Lei was dumbstruck. ‘She’s analysing...