Development of new projects around Jinma Building in Dalian. Jinma Mansion, located in Jinma Road, Development Zone, is built on the 28th floor of 1984, with a height of 94.6m.. 199 1 officially put into use, which was the tallest building in "China Development Zone" at that time. At the early stage of the construction of Jinma Mansion, not only the management committee of the Development Zone worked in it, but also many financial institutions, overseas offices and trading companies in the area were concentrated here, becoming the administrative and commercial center of the Development Zone at that time. The buildings around Jinma Building are dense, and the blasting technology is extremely difficult. After repeated measurement and research, experts finally adopted folding blasting and set up two blasting points, and the building collapsed in a "Z" shape. After the blasting of Jinma Mansion, the leveled land will be used for commercial real estate development.