How many years did the three express trains operate?

[CamilleAnn]

The three express trains operated for 48 years. The origin of the three express trains: The three express trains operated for 48 years. These trains, originating from Shanghai, Zhengzhou, and Wuhan respectively, were daily loaded with fresh goods for Hong Kong, including live livestock, poultry, fresh fruits, and vegetables, which were transported to Hong Kong via Shenzhen. Due to their "fixed schedule, fixed routes, and fixed departure times" with three daily runs, they were commonly referred to as the "three express trains." The purpose of the three express trains: Over more than forty years, the three express trains passing through the Sungang Customs totaled over 41,100 trains and more than 36,200 cars. They transported over 98 million live pigs, more than 5.8 million live cattle, over 7.95 million tons of frozen meat, billions of live poultry such as chickens, ducks, and geese, as well as countless quantities of fruits, vegetables, live fish, seafood, and dried goods.