Asian stock markets opened the week with gains, buoyed by record highs on Wall Street and positive economic data from China. The Nikkei index rose 0.3% to 38,303.68 points, while the Shanghai stock exchange increased by 1.0% to 3360.38 points, supported by a strong private purchasing managers' index. However, shares of Uniqlo's parent company fell 2.45% amid criticism over its cotton sourcing policy in China.