Vietnamese Party General Secretary Nguyen Phu Trong, President Nguyen Xuan Phuc, Prime Minister Pham Minh Chinh, and National Assembly Chairman Vuong Dinh Hue sent congratulatory messages and flowers to Lao Party General Secretary and President Thongloun Sisoulith, Prime Minister Phankham Viphavanh, and National Assembly Speaker Xaysomphone Phomvihane.