Qiandao Lake is a man-made lake located in Chun’an County, China, where archeologists have discovered in 2001 ruins of an underwater city. The city is at a depth of 26-40 meters and was named “Lion City”. There would have been 290 000 people living in this city during more than 1300 years. Touristic expeditions are projected. A diving into Chinese Antiquity in the next part of the article.