On this day, 66 years ago, on January 10, 1959 (December 2, 1958, the lunar calendar), China's first oil pipeline was completed and began to transport oil. On January 10, 1959, China's first oil pipeline-the oil pipeline from Karamay to Dushanzi in Xinjiang was completed and began to transport oil. The total length of the pipeline is 147 kilometers. This is the trench digging machine digging the trench for laying the oil pipeline.