During his visit and working trip to Quang Ninh Province, on the afternoon of December 19, the Minister of Foreign Affairs of the Lao People’s Democratic Republic, Mr. Thongxavanh Phomvihane, accompanied by his spouse, paid a visit to Ha Long Bay, a World Natural Heritage site. The delegation was received by Mr. Mai Vu Tuan, Head of the Ha Long Bay – Yen Tu World Heritage Management Department.