World leaders are gathering in South Africa for the 2025 G20 Summit on Saturday and Sunday. While the summit offers an opportunity to rebuild eroding trust and foster global cooperation, some countries are choosing to give it a miss, obstructing consensus-making on various global issues. CGTN's Zheng Junfeng notes that the G20, which accounts for 80 percent of the global GDP, must serve as a stabilizer, not a source of division.