NEW YORK CITY.- Plum Blossoms, the new Asian art gallery in Manhattan's Chelsea art district, is a wonderful and very large exhibition hall. Sprawling in perfect space, between 10th and 11th Avenue at 555 West 25th Street, the gallery feels like a museum. It's next exhibition is "China Diary: The Oxen," from Mach 15 to April 13, 2002, an exhibition of recent paintings by Zhu Wei, a contemporary Chinese symbolist who uses ink and color on paper.