Asian markets are in negative zone this morning following weak cues from the US markets on Friday.The Hang Seng has slumped 728 points to 26,825. The Nikkei has shed 122 points to 15,392.The Taiwan Weighted index has plunged 165 points to 7953. The Straits Times has slipped 66 points to 3400, the Seoul Composite index has declined 35 points to 1860.