多股20%涨停，军工股集体猛拉

Market Overview - A-shares opened lower and continued to decline, with the Shanghai Composite Index falling below 3400 points, and major indices like the Shenzhen Component and ChiNext Index dropping over 1% [1] - More than 4500 stocks declined, with trading volume increasing [1] Oil and Energy Sector - International crude oil prices surged, leading energy stocks to open significantly higher, with the combustible ice concept leading the gains, and the sector index rising over 5%, reaching a one-and-a-half-month high [2] - Major oil service and shale gas stocks also saw gains, with companies like Tongyuan Petroleum and Junyou shares hitting the daily limit [4] - Brent and WTI crude oil prices both increased by over 10%, marking the largest single-day increase in over three years [6] - Domestic crude oil futures also experienced a strong rise, with main contracts hitting the daily limit shortly after opening [6] Military and Defense Sector - Defense and military stocks rose collectively, with ground equipment concepts leading the gains, and the sector index increasing over 4% [8] - The international situation, particularly tensions in the Middle East and the ongoing Russia-Ukraine conflict, is contributing to the strength in military stocks [10] - The U.S. defense budget is set to increase significantly, which may further boost the military industry [10] Chemical and Commodity Sector - Chemical products saw collective gains, with methanol, short fibers, PTA, and styrene leading the increases [6]