令人咋舌的『純手工』! ---From Clay to Mosaics
There is a master piece of mosaic work "mihrab" in the Islamic Department of the Metropolitan Museum.After seeing this video， one would appreciate the art piece even more. 
Incredible demonstration of manual ability!
第一次看到從粘土製成鑲嵌細工馬賽克 -
令人咋舌的『純手工』作業!
From Clay to Mosaics
https://www.youtube-nocookie.com/embed/oEc-ESRjntg?rel=0&autoplay=1