C946 Insulin

The scene was very neat, apart from a few traces of dragging.

There weren't even any footprints, so they didn't have any clue for a while.

Yang Wei said to Song Qiqi, "If you look carefully, you should be able to find something wrong."

Yang Wei knew that Song Qiqi had also learned about medicine at the police academy. She would probably understand these aspects and make some discoveries