Photo taken on April 16, 2018 shows an unmanned delivery car at a pilot community in Nanjing, capital of east China's Jiangsu Province. China's express delivery sector handled 50.5 billion parcels in 2018, up 25.8 percent year on year, data from the State Post Bureau (SPB) showed. Gross business revenue of the sector increased 21.2 percent year on year to hit 601 billion yuan (about 88 billion U.S. dollars) last year, according to the SPB. (Xinhua/Li Yuze)