The term "G4期" refers to a specific phase in the development of the G4 nations, which include Germany, India, Japan, and Brazil. This phase is characterized by these countries seeking a permanent seat on the United Nations Security Council to enhance their influence in global governance. During the G4期, these nations collaborate to advocate for reforms in international institutions, aiming to reflect the current geopolitical landscape. Their efforts focus on promoting a more equitable representation of emerging economies in decision-making processes, thereby addressing the challenges of the 21st century.