Heat waves expected to hover in central, eastChinese paddlers continue winning streak at WTT Champions IncheonXi Visits Beijing School Ahead of International Children's DaySummer travel booms in countryPear trees enter full bloom in Anhui, E ChinaXi Sends Congratulatory Letter to Rehabilitation International Centennial CelebrationMigrating grey cranes fly to national wetland park in SW China's Yunnan to overwinterTourism market shows summer recovery signsXi Sends Congratulations to Micronesia's New PresidentXi Urges Efforts to Promote Garbage Sorting as New Fashion for Low