Reliable. The pearls in Taihu Pearl Hall are provided by professional pearl dealers, and are tested in strict accordance with national standards to ensure the authenticity and quality of pearls, which is trustworthy. Taihu Lake, located in the southern edge of the Yangtze River Delta, is known as Zhenze and Tuju in ancient times, also known as Wuhu and Lize, and is one of the five largest freshwater lakes in China.