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India is getting ready for the Group of 20 summit, to be held from September 9 to 10 in New Delhi. The theme of this year's G20 Summit is "One Earth, One Family, One Future," echoing China's call for a shared future. Teng Jianqun, director of the Diplomacy Studies Center at Hunan Normal University, says this year's G20 Summit is an important forum to reach a new consensus on dealing with challenges.