On December 22, 2016, Harbin set out to Chagan Lake for self-driving. It was not too far from Harbin to Chagan Lake for 3.5 hours. To Chagan Lake, we drove our car to amuse Chagan Lake. The ice lake was frozen, but we still had to drive carefully, follow the route of flag insertion, and do not walk randomly in some places where the ice was still very thin. It was still very spectacular to watch fishing at the winter fishing site.