A tourist views a huge abacus at China Abacuses Museum in Nantong, east China's Jiangsu Province, March 24, 2011. Covering a total area of 6,000 square meters, the museum displays various abacuses and historical datas to help visitors understand the function and the status of abacuses calculation in the social development. (Xinhua/Xu Congjun)
A visitor walks past a board with Chinese characters reading "Chinese abacuses go global" at China Abacuses Museum in Nantong, east China's Jiangsu Province, March 24, 2011. Covering a total area of 6,000 square meters, the museum displays various abacuses and historical datas to help visitors understand the function and the status of abacuses calculation in the social development. (Xinhua/Xu Congjun)
A tourist views a huge abacus at China Abacuses Museum in Nantong, east China's Jiangsu Province, March 24, 2011. Covering a total area of 6,000 square meters, the museum displays various abacuses and historical datas to help visitors understand the function and the status of abacuses calculation in the social development. (Xinhua/Xu Congjun)
A visitor walks past a board showing pithy formula for abacuses calculation at China Abacuses Museum in Nantong, east China's Jiangsu Province, March 24, 2011. Covering a total area of 6,000 square meters, the museum displays various abacuses and historical datas to help visitors understand the function and the status of abacuses calculation in the social development. (Xinhua/Xu Congjun)
An abacus is displayed at China Abacuses Museum in Nantong, east China's Jiangsu Province, March 24, 2011. Covering a total area of 6,000 square meters, the museum displays various abacuses and historical datas to help visitors understand the function and the status of abacuses calculation in the social development. (Xinhua/Xu Congjun)
An abacus is displayed at China Abacuses Museum in Nantong, east China's Jiangsu Province, March 24, 2011. Covering a total area of 6,000 square meters, the museum displays various abacuses and historical datas to help visitors understand the function and the status of abacuses calculation in the social development. (Xinhua/Xu Congjun)
