Today, 40 years ago, on December 3, 1985 (October 22, 1985) China's first cargo ship shipping postal route opened. On December 3, 1985, China's first cargo ship shipping postal route Tianjin to Guangzhou was officially opened. The opening of the cargo ship shipping postal route, is a measure of the distribution of the South Northern Traffic Artery, Beijing Broad Railway, which is conducive to the advantage of large cargo shipping and low cost. At the time, Tianjin to Guangzhou cargo shipping postal service was temporarily three to four flights per month, each flight takes about five to six days.