April 11，Zheng Bo, Deputy Editor-in-Chief of the Economic Daily, and his delegation went to the Railway Construction Heavy Industry to investigate the practical exploration and innovative measures to implement Xi Jinping's economic thought in Changsha.。Liu Lin, the stationmaster of Hunan Reporter Station of Economic Daily，Vice Minister of Publicity Department of Changsha Municipal Committee、Zhu Jinhui, Director of the Information Office of the Municipal Government, and other relevant leaders participated in the survey.，Deputy Secretary of the Party Committee of Railway Construction Heavy Industry、Director、He Yongjun, chairman of the trade union, accompanied the investigation。

Zheng Bo and his delegation visited the tunnel boring machine production line of Railway Construction Heavy Industry successively.、Drilling and blasting tunnel equipment production line、Digital Command and Monitoring Center and Exhibition Hall of Original Technology Origin Achievements，Detailed understanding of the technical features of the product、Market application and supply chain support，Promoting Scientific and Technological Innovation and Mechanism Reform for Railway Construction Heavy Industry，He spoke highly of the achievements made in promoting the substitution of domestic equipment for imports.。

He Yongjun introduced the development process of the enterprise.、Production and operation、Digital transformation and core technology research, etc.，Thank you for the long-term concern and support of the Economic Daily.，He said that China Railway Construction Heavy Industry will promote high-quality development with practical achievements.，Continue to tell wonderful innovative stories.。