Beijing, April 21 -- Vietnam's grand celebration of the 50th anniversary of the liberation of the south and national reunification helps the nation usher in a new era ahead of the 14th National Congress of the Communist Party of Vietnam (CPV), said former chief representative of China's Xinhua News Agency in Hanoi Ling Dequan. The event also reinforces solidarity and motivation in achieving its goals set for the centenaries of the Party's and nation's founding, Ling told a Vietnam News Agency (VNA) correspondent in Beijing. Ling, who witnessed and reported on Vietnam's resistance war against the US as a Xinhua reporter, recalled that 50 years ago, under the CPV leadership, the Vietnamese people and army launched the historic Ho Chi Minh c...