On February 4th, the air force of the southern theater of the Chinese People's Liberation Army conducted a routine patrol in the airspace of Huangyan Island on February 4th. During this period, the Philippines solicited the so-called "joint patrol" organized by foreign countries to deliberately disrupt peace and stability in the South China Sea. The air force of the theater continued to maintain a high degree of alert and resolutely defended the country's territorial sovereignty and maritime rights and interests, and any military activities that disrupted the South China Sea were under control.