From the latter half of 17^th century to the early 20^th century, Vietnamese courts sent the envoys to China for the diplomatic relation. Besides the diplomatic missions, these envoys also went to ceramic kilns in China to commissioning the high quality porcelains, bringing them back to Vietnam for the needs of the Vietnamese courts. These porcelains, called đo su ky kieu (Commissioned patterned porcelains), though made in China, having the “Vietnamese criteria”, such as: the Vietnamese reing titles; the decorative motifs on these porcelains is affected by the Vietnamese arts; the poems on these porcelains were written in Nom spript of Vietnam, or the authors of these poems were the Vietnamese. These were the very special porcelains, the products of cooperation between the Vietnamese and Chinese in the past. And now, they become the favourite antiques with the Vietnamese and the foreign collectors.