两只ETF，涨超4%！

Group 1: A-share Market Overview - The A-share market experienced an overall decline, with major indices showing mild downward trends, while the construction materials sector surged, becoming the main highlight of the morning session [1][3]. - The construction materials sector led the gains with an increase of over 3%, featuring significant rises in stocks such as Keshun Co., which rose by 13.62%, and others like Wanli Stone and Jiuding New Materials hitting the daily limit [3]. Group 2: ETF Market Performance - Two Brazil-themed ETFs stood out in the ETF market, both rising over 4%, attributed to the strong performance of the Brazilian stock market recently [2][7]. - The Brazil ETF (159100) and the E Fund Brazil ETF (520870) have seen cumulative gains of approximately 10% since 2026, reflecting the robust performance of the Brazilian IBOVESPA index, which increased by over 3% on January 21 [7][10]. Group 3: New Stock Listing - A new stock, Guoliang New Materials, debuted in the A-share market, with its price surging by as much as 219.14% during the morning session before retracting [12]. - Guoliang New Materials specializes in high-temperature industrial refractory materials and has established partnerships with several well-known steel companies, leveraging its technological and regional advantages [12].