Chongqing, famed for its skyscrapers, spicy cuisine and labyrinthine streets, boasts another cultural emblem: the "bangbang" army. These manual laborers, shouldering heavy loads up and down the hills, stand as a vital symbol of the city. Despite China's delivery service boom reducing their numbers from 300,000 to less than 2,000, the resilient bangbang spirit, embodying hardship and responsibility, perseveres. CGTN reporter Ge Ning takes on the bangbang challenge, immersing herself in this enduring spirit.