We don't have synonyms for sancai yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are sanai, sanmai and sanchi.
(n) :
A kind of decoration on Chinese pottery using glazes or slip, predominantly in the three colours of brown (or amber), green, and a creamy off-white, and particularly associated with the Tang dynasty (618–907) and its tomb figures.
(n) :
A kind of decoration on Chinese pottery using glazes or slip, predominantly in the three colours of brown (or amber), green, and a creamy off-white, and particularly associated with the Tang dynasty (618–907) and its tomb figures.