Marking the 6th anniversary of the symposium on comprehensively advancing the development of the Yangtze River Economic Belt, this two‑minute documentary features the Zhoudai Bridge, a landmark mega‑project in east China.

Built on harsh marine terrain with 20‑40‑meters‑thick fluid seabed mud, the 25.7‑kilometer bridge forms part of an 86.68‑km expressway network linking eight Zhoushan islands to the Chinese mainland.

Facing powerful typhoons, strong ocean currents and an unstable soft seabed, engineers deployed 109‑meter‑long steel piles and BDS‑GPS dual‑mode high‑precision positioning technology to anchor the massive structure firmly to the sea floor.

More than an engineering showcase, the cross‑sea corridor serves as a tangible case study for the Yangtze River Economic Belt.

By shortening space‑time distances within city clusters, this major infrastructure helps foster coordinated regional development, supports domestic‑international dual‑circulation, and advances high‑quality growth across the Yangtze River Delta.

Overseas audiences can grasp China's progress in regional high‑quality development through this single bridge project.