Market View: Trump expresses optimism in meeting with China’s Xi; Optimism surrounding US tech sector, Nvidia’s updates at GTC, Qualcomm’s new AI accelerator chips, AMD-US Department of Energy US$1B supercomputer and AI partnership; Look ahead to Fed’s rate decision; Toyota says it did not explicitly promise Trump new US$10 billion investment in US; Malaysia’s ban on raw rare earths exports; Amazon to invest another US$5 billion in South Korea data centres; Keppel Reit to watch