Asian markets are mostly in negative zone this morning. Japan's Nikkei has slipped 56 points to 18,031. China's Shanghai Composite index has dropped 24 points at 3917.Hong Kong's Hang Seng, however, has moved up 78 points to 21,900.The Taiwan Weighted index has plunged 53 points to 8864, and the Straits Times index has shed 30 points to 3550.The Seoul Composite index is down nine points to 1749.