Beijing, Oct. 14 -- National Assembly (NA) President Tran Thanh Man on October 14 visited the Yangjialing and Zaoyuan revolutionary sites in Yan'an city, northwest China's Shaanxi province during his official visit to China. He was accompanied by Chairman of the Standing Committee of the Yan'an municipal People's Congress Wang Junying, and Secretary-General of the Standing Committee of the municipal People's Congress Ren Gaofei. NA President Man and his delegation travelled to Yan'an by high-speed train. The city is regarded as the cradle of China's revolution and a symbol of resilience, solidarity and self-reliance. It also bears the imprint of Nguyen Ai Quoc, or President Ho Chi Minh, whose revolutionary activities during his time in Ch...