What does the phrase engineering ribbon-cutting mean?

Project ribbon-cutting-ribbon-cutting refers to the ribbon-cutting at a ceremony to indicate the completion of a building, the departure of a new car-building boat or the opening of an exhibition. The ribbon-cutting of the project refers to the celebration activities held by relevant business units to celebrate the establishment of the company, the anniversary celebration of the company, the start of enterprises, the completion of hotels, the opening of shops, banks, large-scale buildings and the opening of roads or waterways. For example: (1), now I declare: the ribbon-cutting ceremony for the completion of the village-level activity venue in xx village begins now! Shoot and play music. Please all stand up, raise the national flag and sing the national anthem. (3) Comrade xx, director of the village committee, introduced the project to you.