Group 1: Market Performance - On July 30, A-share resource sector strengthened, with oil, gas, and chemical ETFs leading the gains [1][2] - The oil and gas resource ETF (563150) rose over 3%, while other resource ETFs also showed positive performance [2][3] - In the Hong Kong market, the automotive sector experienced significant adjustments, with major stocks like Li Auto and BYD dropping over 5% [5] Group 2: ETF Trading Activity - On July 30, five ETFs exceeded a trading volume of 10 billion yuan, with the Hong Kong Securities ETF and Short-term Bond ETF leading with over 200 billion yuan in trading volume [1][8] - The Short-term Bond ETF (511360) had a trading volume of 203.16 billion yuan, while the 30-year Treasury ETF reached 107.93 billion yuan [9] - On July 29, six ETFs saw net inflows exceeding 5 billion yuan, with the E Fund Hong Kong Securities Investment Theme ETF and the Fuguo Hong Kong Stock Connect Internet ETF attracting over 10 billion yuan [10][11] Group 3: Sector Analysis - Analysts suggest that chemical stocks may enter a new upward cycle as oil prices stabilize and chemical supply growth declines significantly [4] - The automotive sector in Hong Kong is facing downward pressure, with multiple automotive-related ETFs declining over 3% [5][6] - The Hong Kong Innovation Drug ETF experienced volatile trading, initially rising over 8% before closing in the red [6][7]