Chinese social history and East Asian maritime history
I:Chinese social history
1: Documentary and archival sources in the Ming-Qing period, especially Huizhou documents
2: Lineage formation in southeast China in the Song-Yuan and the Ming-Qing period
3: Social relation and commercial activity in Huizhou area in the Ming-Qing period
Ⅱ:East Asian maritime history
1: Tributary trade and its transformation in East Asia in 15th and 16th centuries
2: Maritime trade and human migration in maritime East Asia in 16th and 17th centuries.
3: European arrival to East Asia and transmission of information and technology in 16th century
1.The Map of Francisco Rodrigues: Portuguese arrival in maritime Asia and Making of Planispheres.
2.Transmission of Western Style Firearms in Maritime East Asia in the 1540’s: Korea, Shuangyu and Satstuma.
3.Seaports in Central Kyushu and Network of the Fujian Maritime Merchants in the Early 17th Century: Chinese Tombs and Chinese Settlements in Higo Region .
4.Trading Network of Fujian Merchants and the Toyotomi Regime .
5.A reexamination of the ‘Gores’.
6.Organization of the Expeditionary Fleets of the Mongol Invasionof Japan: Their Relations with the Southern Song Naval Fleets.
7.The Conpetitive Seas: 1500-1600 .
8.The Century of Erizeni (Shroffing of Coins) in East Asia: 1460-1570.
9.A Korean Man Drawn by Rubens: Diaspora of East Asians in the 16th and 17th Centuries.
10.From Hand Gun (Chongtong) to Swivel Gun (Folangji): Firearms in Maritime East Asia from the 14th to th 16th Centuries.