Three kinds. Wuchang tricolor rice refers to brown rice, red brown rice and black rice, which are white, red and black respectively. Wuchang Rice, a specialty of wuchang city, Harbin, Heilongjiang Province, is a symbol product of chinese national geography. Wuchang city is a typical agricultural county (city), an important national commodity grain base, one of the top ten advanced counties in grain production and one of the top five rice counties in China.