Researchers have discovered the remnants of a bank revetment and ancient city walls in Fuzhou in east China's Fujian Province, according to a People Daily report.
The finds, accordings to experts, could provide an insight into a city built in the area some 1,100 years ago.
Chen Pin, a research fellow with the Fujian provincial museum, said that the revetment or retaining wall found in the city was wooden.
"There had been a river and the revetment was used to prevent erosion," Chen said.
"Such a structure existed only in south China," the researcher added.
The experts also discovered the footing of a city wall, which was constructed during the Five Dynasties period (907-960).
Later, in the Song Dynasty (960-1279), walls as high as one meter were built on top of the footing, evidence of which were also found by the researchers.
"By studying the ruins, we learned the techniques these people have used--how they built a city," Chen said.
"They dug a trench, filled it with interlaced stone and wood, before compacting it with earth," he said.
"The discovery verifies descriptions in historical data about the development of Fuzhou City," said Lou Jianlong, head of the cultural relics and archaeological research institute of the Fujian museum.