突发大利好！暴涨800点！

Core Viewpoint - The Japanese stock market experienced a significant surge, with the Nikkei 225 index rising by 800 points, driven by strategic partnerships in the technology and energy sectors, as well as a cautious stance from the Bank of Japan regarding interest rate hikes [1][9]. Company Developments - Hitachi's stock surged by 10%, marking its largest increase since April 10, following the announcement of a strategic partnership with OpenAI to collaborate in energy, artificial intelligence, and other fields [4][7]. - The collaboration is expected to boost Hitachi's energy orders, which contributed over 20% to the company's adjusted EBITA in the fiscal year ending March [7]. - Fujitsu's stock also rose significantly as the company announced an expansion of its strategic partnership with NVIDIA to create a comprehensive AI infrastructure tailored for various industries, including healthcare and manufacturing [8]. Market Reactions - The surge in the Japanese stock market was also influenced by comments from the Bank of Japan's Governor, Kazuo Ueda, who maintained a cautious approach towards interest rate hikes, emphasizing the need to monitor various economic factors before making any policy changes [10][11]. - Ueda's neutral tone led to a slight depreciation of the yen against the dollar, as market expectations had leaned towards a more hawkish stance [12][14].