Recently, The Paper conducted an experiment where eight samples, each with a net weight of 2.5kg, were purchased and packed, amounting to a total weight of approximately 2.7kg. The reporter subsequently utilized eight prominent express delivery services—SF Express, JD Logistics, EMS, ZTO Express, Yunda Express, YTO Express, STO Express, and J&T Express—to ship the package to the same location within the city, utilizing both "standard" and "economy" services. The findings of this test highlighted a prevalent practice among some express delivery companies, whereby they opted to 'round up' the weight of the 2.7kg package, charging as if it weighed 3kg.