HONG KONG/SHANGHAI, Jan. 1 -- China's domestically-produced C919 passenger jet made its debut on scheduled services between Shanghai and Hong Kong on Wednesday, representing a significant milestone in the country's aviation manufacturing sector. Decorated in a special design symbolizing "Chinese red," the narrow-body airliner operated by China Eastern Airlines took off from Shanghai Hongqiao International Airport at 8:21 a.m., carrying 157 passengers, and landed in Hong Kong at 10:44 a.m., followed by a ceremonial water salute. (....)