The history of Hong Kong under the Japanese occupation, commonly known as the “Three Years and Eight Months” has been extensively studied. However, previous studies mainly focus on the living conditions under the Japanese, the suffering of the civilian population, and the resistance of the communist guerilla and the British resistance organizations such as the British Army Aid Group. The strategic and economic importance of Hong Kong as a Japanese-controlled port during the Pacific War, the Japanese policy towards this new possession, and the Anglo-American-Chinese competition to regain the colony are seldom discussed in detail. The speaker would like to share his experience in the study of these issues, using the Japanese and British archival sources. A more in-depth study of the wartime history of Hong Kong, the speaker argues, also shows that the future of the city and its quick revival after the Japanese surrender were all results of contingency that could not be foreseen even by the contemporaries.