Group 1 - TSMC's chairman, Wei Zhejia, announced an upgrade of the Kumamoto factory's process to 3nm, a technology previously deemed too critical to share [1][4] - The concept of "Silicon Shield" is challenged as TSMC's actions appear to undermine Taiwan's strategic position by transferring advanced technology to Japan [4][9] - Japan is investing significantly in TSMC's operations, offering substantial subsidies and land, aiming to strengthen ties with Taiwan while countering China's influence [4][6] Group 2 - TSMC's overseas expansion has a history of escalating commitments, with initial plans for a less advanced process now including 3nm and even 2nm technologies in the U.S. [6] - The company has relocated over 3,000 core engineers from Taiwan to support its international operations, raising concerns about Taiwan's talent pool and economic stability [6][9] - TSMC accounts for 35% of Taiwan's stock market value, and its weakening could severely impact the island's economy, highlighting the risks of external dependencies [8][9]