Hanoi, Feb. 14 -- Prime Minister Pham Minh Chinh offered incense at Kinh Thien Palace, part of the Thang Long Imperial Citadel in Ha Noi, to commemorate kings and those who made contributions to the nation on the morning of February 14, the 27th day of the last lunar month. Kinh Thien Palace was built in 1428 under the Le dynasty. During the Nguyen dynasty (1802-1945), King Gia Long ordered the construction of a new citadel. The Le-era palace remained the centre of the royal residence complex under the Nguyen, although its scale was reduced. In 1841, the Nguyen dynasty renamed it Long Thien Palace. At the ceremony, PM Chinh and other delegates prayed for national peace and prosperity, and for the people to enjoy happiness. Speaking to the...