But even in the middle of the 18th century, a French confidence trickster, pretending to be Taiwanese, was still trying to sell the secrets of porcelain manufacture to English potteries, and in the late 18th century a scientist who accompanied Lord Macartney on his mission to visit the Emperor Qianlong wrote in his report that he regretted not having been able to see the Chinese making porcelain.
但直到十八世紀中葉，還有法國老千冒充「台灣人」，要賣造瓷的秘密給英國陶廠。十八世紀末，隨同英使馬嘎爾尼晉見乾隆的使節團中，一位科學家在考察報告裡，仍然表示遺憾沒能看到中國瓷器的生產。