The Shanghai Composite edged up 0.15% to around 4,140 on Thursday, while the Shenzhen Component declined 0.6% to 14,378, as mainland Chinese equities delivered a mixed performance amid ongoing concerns over Middle East tensions and surging oil prices. The backdrop worsened after Iraq suspended operations at its oil terminals following attacks on two tankers in Iraqi waters, underscoring heightened supply risks in the region. At the same time, the IEA authorized its largest-ever emergency release of crude—400 million barrels—but markets largely judged the move as inadequate to fully address the disruption. China, however, is seen as relatively well positioned to absorb the supply shock, having spent years prioritizing energy security through stockpiling reserves and diversifying its energy mix. At the stock level, notable gainers included China Energy Engineering (+5.5%), Accelink Technologies (+7.7%), and Sanan Optoelectronics (+7.2%), while significant declines were recorded by Huagong Tech (-3.7%), Beijing Teamsun (-4.5%), and Eoptolink Technology (-2.5%).