Group 1 - The A-share market is experiencing a surge in mergers and acquisitions, with several companies achieving significant stock price increases following their announcements [1] - A total of 26 A-share listed companies disclosed merger and acquisition progress this week, including notable firms such as Star Technology, Huijin Co., and Aier Eye Hospital [1] - Specific transactions include Wanchen Group's proposed acquisition of 49% of Nanjing Wanyou for 1.379 billion yuan and Jiebang Technology's acquisition of 51% of Sainuo Gaode for 408 million yuan, both achieving a 20% price limit increase [1] Group 2 - Star Technology plans to acquire a stake in a company for 214 million yuan, while Huijin Co. intends to cash purchase 20% of Cooper New Energy [2] - Aier Eye Hospital is set to acquire three medical facilities, and China National Nuclear Corporation plans to invest 9.375 billion yuan in a project [2] - Other companies like Tai Lingwei and Xinyuan Technology are also in the process of significant acquisitions, with Tai Lingwei aiming to acquire 100% of Panqi Micro for an undisclosed amount [5][6] Group 3 - Semiconductor company SMIC is planning to acquire a minority stake in its subsidiary, SMIC North, through the issuance of A-shares, with the transaction expected to involve 49% of the subsidiary [4] - Tai Lingwei is looking to enhance its market competitiveness by acquiring Panqi Micro, which operates in the low-power wireless IoT chip design sector [5] - Dongzhu Ecology is in the process of acquiring a controlling stake in Kairui Xingtong, a high-tech company involved in satellite communication technology [6]