After several years of achievements and failures beyond number, Liuli Gongfang managed to complete more than fifty pieces. In 1991,under the patronage of the Taiwan Ministry of Economics, they had their first exhibition in Japan. The show gave the artists a chance to come into contact with various international perspectives. They had reached a milestone.

Before that time, it was perceived that the French were the only ones with experience with the pate-de-verre method. However, Liuli Gongfang discovered for the first time, from the insight of the international Asian glass artist Tsuneo Yoshimizu, that Liuli Gongfang's pate-de-verre method had possibly already been carried out at a very sophisticated level by the Chinese as early as the Han dynasty (2nd century B.C. to 2nd century A.D.). An example of their technique presented itself in the form of a mug unearthed from the burial tomb of King Liu Sheng at Zhongshan in Mancheng county, Hebei province.

The skill that had exhausted all of Liuli Gongfang's resources, had already been applied by artisans of the Han dynasty, more than 2000 years ago. Unfortunately, the skill had been left behind by history.