Core Insights - A research team led by Princeton University has observed an unusual chiral quantum state in a topological material known as KV3Sb5, using a newly developed scanning photocurrent microscope [1] - This discovery addresses a long-standing debate regarding the spontaneous formation of chiral quantum states in topological materials and provides crucial insights for the development of future quantum technologies [1] Summary by Categories Research Findings - The study published in the journal Nature Communications highlights the direct observation of a chiral symmetry breaking phenomenon hidden behind charge density waves in KV3Sb5 [1] Implications for Quantum Technology - The findings are significant as they offer key clues for the advancement of new quantum technologies, potentially influencing future research and applications in the field [1]

Macroeconomic Events - The People's Bank of China conducted reverse repurchase operations totaling 279 billion yuan on April 28, with a winning rate of 1.5%, resulting in a net injection of 103 billion yuan after 176 billion yuan matured that day [1] - The manufacturing PMI for April fell to 49.0%, down 1.5 percentage points from the previous month, indicating a contraction in the manufacturing sector [1][2] - The State Council approved nuclear power projects, emphasizing the importance of safety in nuclear development, which is expected to boost related industries and employment [1][2] Industry Data - As of April 27, China has 102 operational, under-construction, and approved nuclear power units, with a total installed capacity of 113 million kilowatts, making it the world's largest nuclear power producer [1][2] - In Q1, China's smartphone market shipped 70.9 million units, a year-on-year increase of 5%, driven by state subsidies and consumer recovery [1][2] International Political Events - The new Canadian government, led by Prime Minister Carney, criticized the previous U.S. trade policies and vowed to strengthen cooperation with Europe and the Asia-Pacific region, potentially impacting trade dynamics [1][3] - The International Court of Justice began hearings on Israel's blockade of Gaza, which may increase international pressure on Israel regarding humanitarian aid access [1][3] Financial Market Performance - The domestic bond market saw an increase in funding rates, with the overnight Shibor rising to 1.606% and the seven-day Shibor to 1.641% [2] - The A-share market exhibited volatility, with the Shanghai Composite Index fluctuating around 3,300 points, while sectors like electricity and AI performed well, contrasting with weaker performance in real estate and finance [2][3] - International markets showed mixed results, with U.S. stocks experiencing varied performances among major Chinese concept stocks, while European indices generally rose [2][3] Market Strategies - In bond investments, increasing the allocation to short-term government bonds is recommended to secure stable coupon income, while monitoring economic data for potential adjustments [4] - For equity investments, focusing on undervalued blue-chip stocks with high dividends is advised, alongside identifying growth opportunities in emerging industries like AI and renewable energy [4] - A diversified asset allocation strategy is suggested to mitigate risks, with dynamic adjustments based on macroeconomic indicators and market conditions [4]