Beijing, July 19 (Youth.cn) - Beijing central axis water system exhibition was held in Tai'anli cultural art center on July 18th. With the topic of "beauty of mountain and water, intelligent central axis", an exhibition of Beijing central axis water system told visitors knowledge about water system in Beijing and showed beautiful scenes of water system in Beijing. The exhibition interpreted historical value of Beijing central axis water system while stimulating public interests and curiosities for natural sciences. Visitors got to know more about the design wisdom of the central axis water system through interactive interpreting of the exhibition. Photo/VCG