Core Viewpoint - The archaeological discovery at the Xiaojia Lane site in Ningbo, Zhejiang Province, reveals significant historical evidence of trade activities and cultural exchanges from the Han Dynasty to the Ming and Qing Dynasties, highlighting the importance of the Ningbo port in ancient maritime trade [1]. Group 1: Archaeological Findings - The Xiaojia Lane site consists of four cultural layers dating from the Han and Six Dynasties, Tang and Five Dynasties, Song and Yuan, to the Ming and Qing periods [1]. - Numerous artifacts were unearthed, including 477 complete or restorable specimens of pottery, porcelain, stone, copper, and wooden items, with a total of 251 archaeological remains such as pits, ditches, wells, house foundations, roads, and stone platforms [1]. Group 2: Trade Evidence - The discovery of various porcelain fragments from different kilns, including those from Fujian and Jiangxi, indicates the active trade at the Sanjiangkou port during the Song and Yuan periods, providing evidence for the study of port trade patterns [1]. - The Ningbo port was officially opened in 738 AD, marking the beginning of its significance in maritime trade [1]. Group 3: Historical Context - Artifacts from the Han and Six Dynasties primarily include wells, postholes, and ditches, with life-related items such as bowls, jars, and basins made of pottery and porcelain [1]. - A notable artifact is a brick inscribed with "Yongyuan Tenth Year" from the Eastern Han Dynasty, providing a clear chronological reference for the site's early remains [1].

Core Insights - The article discusses the exploration of archaeological sites related to the Yue Kiln, a significant ancient porcelain production center in China, particularly in the region of Shanglin Lake, Zhejiang Province [1][2][6]. Group 1: Yue Kiln Overview - The Yue Kiln is recognized as one of the most famous ancient celadon kiln systems in China, primarily located in the area of Shanglin Lake, which was part of Mingzhou during the Tang Dynasty [2][3]. - The earliest porcelain in China was produced in the dragon kilns of this region during the Eastern Han period, and the Yue Kiln celadon represented the highest level of porcelain manufacturing until the Song Dynasty, influencing ceramic production in Egypt, Persia, Korea, and Japan [2][3]. Group 2: Archaeological Findings - Significant archaeological investigations have been conducted in the Shanglin Lake area since the 1930s, confirming it as the central production site for Yue Kiln celadon [3][4]. - Major excavations revealed numerous kiln sites, including the discovery of two kilns from the Tang and Song periods, with one Tang kiln measuring 41 meters in length and 3.2 meters in width [4][5]. - The findings from these excavations provide reliable physical evidence for the study of Yue Kiln culture, including its development from inception to decline [6][5]. Group 3: Characteristics of Yue Porcelain - Yue porcelain is characterized by its thin body, uniform glaze, and vibrant green color, with its origins tracing back to late Neolithic glazed pottery [7][9]. - The production techniques evolved over time, with the Tang Dynasty marking the peak of craftsmanship, where products became highly sought after and were considered luxury items alongside gold, silver, and silk [8][9]. Group 4: Historical Significance - The Shanglin Lake area is also recognized as the birthplace of "secret color" porcelain, which was highly praised for its beautiful glaze and exquisite designs during the Tang Dynasty [12][13]. - The term "secret color" refers to a specific glaze formula that produces a unique aesthetic effect, contributing to the prestige of Yue porcelain in the imperial court [12][15].