In the coast zone of the Chuanshui Bay, Dongtai City, Jiangsu Province, elks walk in small groups and a few water birds forage and perch leisurely by the pond. They raise their heads from time to time to look at the construction machinery working in the distance.

This is the scene of ecological protection and restoration of the coast zone of the Chuanshui Bay and the project is undertaken by CCCC Shanghai Dredging.

With a coverage area of about 12.7 square kilometers and a costal line of about 6 kilometers, the marine ecological protection and restoration project has the largest scale in Jiangsu Province. Located in protection area of the first phase of the World Natural Heritage China's Yellow (Bo) SeaMigratory Bird Habitat, the project is a key hub on the East Asian–Australasian Flyway migration route with the most endangered species and the largest threat, and also a resting, molting, and wintering place for millions of migratory birds.

In order not to disturb the wild animals in the protection area during the construction, the project team recorded in detail the activity range and rest time of various animals, and finally made daily construction arrangements to avoid the foraging and living areas of wild animals as much as possible.

The project team specially developed an early warning system with an infrared camera function. Once an animal approaches the detector, the monitoring room will send out an alarm to remind nearby constructors.

In addition, as the project team became closer to wild animals, the constructors rescued 4 elks trapped in mire in time. "After the last elk was rescued, it kept staring at us, as if expressing gratitude to us," the project member recalled.