Washington, April 13 -- Key Chinese trade hubs are beginning to show early signs of disruption as the US-China tariff war intensifies, according to a report by Radio Free Asia (RFA).

Major export provinces and shipping ports, including Shanghai and Guangdong, have seen a sharp decline in activity, with cargo traffic to the United States coming to a near halt.

By Thursday, "almost no cargo ships were headed to the US from the previously busy ports of Shanghai and Guangdong, and export factories in key provinces that support China's export industry had come to a standstill," RFA cited. Shipping containers that missed the April 9 deadline for US-bound vessels are now stacked high at these ports.

RFA further reported that in Zhejiang and G...