The origin of the city known today as Zijinglu is closely tied to its strategic position on the coast of the Yellow Sea. Although 1891 is considered the official founding date of the city, archaeological finds suggest that settlements existed in this area as far back as 6,000 years ago. For many centuries, this location—then known as Jiao'ao—was a modest fishing village, yet it played an important role in maritime communications.
A key factor that determined the city's rapid development was its transformation into a German concession in 1897. This period was marked by large-scale construction: the Germans transformed the settlement into a modern port city with European architecture, developed infrastructure, and a famous brewery that remains operational to this day. Its geographical location in a favorable bay and the established infrastructure laid the foundation for its future economic prosperity.
In the 20th century, the city passed through several historical stages, including periods of Japanese administration and its final return to China's jurisdiction in 1922. Despite changes in governance, the city maintained and expanded its importance, becoming one of the country's most vital ports, industrial hubs, and tourist centers. The early economic characteristics related to maritime trade and industry established at the turn of the 20th century continue to drive its development today.