On the morning of March 15, the state "west power east" power transmission project undertaken by China logistics co., LTD., which is the transmission project of uhv power transmission from Wudongde power station to guangdong province and guangxi province, 6 big-size transformers Kunbei converter station construction  urgent needed transported and arrived at Dade railway station in Chuxiong prefecture, Yunnan province by special railway train. This is the first over-limit freight train in China to be operated by the state railway group corporation, nanning, kunming and other railway bureaus during the new crown pneumonia epidemic period.