China, Japan and South Korea are set to hold their first summit in more than four years, with a gathering in Seoul next week for talks that offer the neighbors a chance to manage their relations amid heightened tensions between Washington and Beijing. Chinese Premier Li Qiang, Japanese Prime Minister Fumio Kishida and South Korean President Yoon Suk Yeol will attend the summit on Sunday and Monday, an official for Yoon’s office said Thursday, according to Yonhap News.