Kong said in test runs conducted in October, the CNR train cars beat snow storms and extremely-low temperatures.
The maximum speed hit 385 km per hour while the train was able to maintain 350 km per hour, he added.
The Ministry of Railways earlier said the trains on the Harbin-Dalian route will adopt different speeds -- 200 km per hour during winter (Dec. 1 to March 31) while traveling 300 km per hour in summer (April 1 to Nov. 30).