Beijing, July 15 (Reporter) China's National Immigration Administration announced on Monday that the country's 144-hour visa-free transit policy has been expanded to three more entry ports, taking the number of ports covered by the policy to 37. The three new ports are Zhengzhou Xinzheng International Airport in central China's Henan Province, Lijiang Sanyi International Airport in southwest China's Yunnan Province, and the Mohan railway port in Yunnan, the administration said in a statement...////...