China's three major state-owned oil companies—PetroChina (CNPC), Sinopec, and CNOOC—issued consecutive announcements on abnormal stock price fluctuations on the evening of March 3. PetroChina's A-share closing prices on February 27, March 2, and March 3 collectively deviated by over 20%, triggering the abnormal volatility threshold. The other two companies released similar risk advisories. All three firms stated their production and operational activities remain normal with no significant policy changes, while cautioning investors about secondary market trading risks and advocating rational investment. This represents standard compliance procedure for listed companies following sharp short-term price movements, aimed at communicating with the market and managing investor expectations.