During field research he discovered that Song-Yuan porcelain had been found in 55 different locations on 18 different islands in the Penghu chain. Moreover, "many different types of porcelain have been unearthed, and these closely resemble what has been found in the Philippines, Malaysia, and Indonesia."
他曾在澎湖做研究，發現澎湖「十八處島嶼、五十五處地點」有宋元陶瓷出土，而「出土的種類甚多，許多與菲律賓、印尼、馬來西亞等地發現的類似」。