据新加坡《联合早报》1991年2月19日报道:新加坡学者郑俊杰在20多个国家发现800余件鲜为人知的元代陶瓷。郑俊杰是新加坡国立大学校外进修系的讲师,主讲多门文化艺术课程。曾赴中国修读陶瓷硕士学位。近五年来,他把研究中国陶瓷的重点放在元代,尤其是元代外销瓷器上。他用三年多的时间考证史料后,又用一年零四个月的时间跑了20多个国家,发现了大量元代瓷器。这些元代瓷器中有200多个完整无损的青花釉里红瓷器。这是一种元代独创的烧制瓷 According to Singapore’s “Lianhe Zaobao” February 19, 1991 report: Singaporean scholars Zheng Junjie in more than 20 countries found more than 800 pieces of little-known Yuan Dynasty ceramics. Zheng Junjie is a lecturer in the Department of International Studies at National University of Singapore. He speaks a variety of arts and culture courses. I went to China to study ceramics master’s degree. In the past five years, he focused on the study of Chinese ceramics in the Yuan Dynasty, especially in the Yuan Dynasty. After more than three years of research on historical materials, he ran more than 20 countries over a year, four months and discovered a large number of Yuan Dynasty porcelain. These Yuan Dynasty porcelain in more than 200 intact blue and white porcelain. This is a Yuan Dynasty original firing porcelain