On November 8th, the training conference of the utility tunnel project at Minjian Road, Changde Economic and Technical Development Zone, Hunan province was held successfully. The municipal operation and maintenance center, Yearning Engineering, subcontractors and equipment suppliers attended the conference. During the conference, the participants exchanged the operation manual of the utility tunnel, the instruction for the use of equipment and the operation specifications of the utility tunnel. After the conference, the leaders of the municipal operation and maintenance center conducted the practical operations on the equipment to understand the early warning, troubleshooting and emergency treatment of the equipment failures.