A股早评：三大指数集体低开，CPO、旅游板块盘初走低

Market Opening Summary - The A-share market opened lower with all three major indices declining: Shanghai Composite Index down 0.45%, Shenzhen Component Index down 0.63%, and ChiNext Index down 0.79% [1] Sector Performance - The oil and gas exploration and service sector opened higher due to a significant overnight increase in international oil prices, with Tongyuan Petroleum rising over 7% and Zhunyou Co. rising over 4% [1] - CPO concept stocks generally opened lower, with Guangku Communication dropping over 8% and Tianfu Communication falling over 5% [1] - The tourism sector continued its downward trend from the previous day, with Yunnan Tourism declining over 7% and Qujiang Cultural Tourism down over 4% [1]