Coins were first struck specifically for Hong Kong in 1863.
Some of the atrocities even continued after Japan surrendered on 8/15/1945.
For example, during 8/16-26/1945, a small garrison of Japanese soldiers in Silver Ore Bay in Lantau Island (where the new Hong Kong international airport is currently located) went berserk and slaughtered, robbed, and burned almost everything in sight, thus almost obliterated several small villages in this bay.
Tens of thousands, including women and children, were killed. Many parts of Hong Kong were ransacked and burned, and many residents left, deported, or escaped to even famine/disease-ridden areas of mainland China.
Basically a reign of terror ruled Hong Kong during those three years and eight months, resulting in Hong Kong’s population of 1.6 million shrinking to 600,000 at the end of that period.
The purpose of recounting these events is not to bash Japan or to generate hatred of Japan, but to make sure that we do not forget the lessons of history so that similar events do not occur again in the future.