Did you know that a laboratory is housed in the Aberdeen Tunnel? In the laboratory, the Hong Kong team of the Daya Bay Reactor Neutrino Experiment with Prof. Chu Ming-chung as its principal investigator has studied high energy cosmic rays that penetrate deep underground and their interactions. This allows for experimental study of the background radiations in an underground environment similar to those in the Daya Bay experimental halls. In the past few years, over 30 undergraduate physics students from CUHK have contributed to the Aberdeen Tunnel Experiment. The Daya Bay Experiment has begun its quest to answer some of the most puzzling questions about the elusive elementary particles known as neutrinos.