Group 1 - The core viewpoint of the article indicates that the Nonferrous 50 ETF (159652.SZ) experienced a decline of 2.28% on December 29, 2025, with significant net outflow of main funds amounting to 20.4458 million yuan, ranking first among comparable funds [1] - The latest trading volume for the Nonferrous 50 ETF was 208 million shares, with the latest transaction amount falling below 350 million yuan, placing it at the bottom among comparable funds [1] - The Nonferrous 50 ETF has associated off-site connections, specifically Class A (019164) and Class C (019165) [1]