China indicated on Monday that its top leader, Xi Jinping, will skip the Group of 20 summit meeting in New Delhi this weekend, dealing a blow to India, the event’s host nation, and raising questions about Mr. Xi’s profile as a global statesman. China will send the premier, Li Qiang, to the event, said Mao Ning, a spokeswoman for China’s Foreign Ministry, at a news briefing. Ms. Mao declined to explain the reason for the decision and refused to answer questions about Mr. Xi. The Chinese leader has never missed…