1. The China Pearl Calculation Museum opened on December 6, 2004, and was approved by the General Office of the State Council at the end of December 2007. The museum is located in Nantong City, Jiangsu Province, on the banks of the beautiful Luohe River, jointly built by Nantong Municipal People's Government and China Pearl Abacus Association, and is the world's largest pearl abacus museum. The museum covers an area of 30 mu, with a construction area of 6,000 square meters. The main building is novel and unique and scattered. 2. Open hours: every Tuesday to Sunday morning 9:00—11:30, afternoon 14:00-16:30, free ticket free, address: No. 58, Yubei Road, Nantong City. 3. At the end of October 2008, the National Tourism Administration issued a document approving the promotion of the China Pearl Calculation Museum to a national AAAA tourist attraction, adding a beautiful scenery to the Nantong Huanlihe Scenic Area. 4, local professional museums, can crown the word "China", it shows that it has the attributes of a national museum, so the level of Nantong Pearl Computing Museum shows its ornamental nature. 5, pearl calculation, although it is gradually withdrawing from people's daily life, but its once role and status, people can never forget. 6, as a free ticket-free professional museum, passing by, if you have time, it is recommended not to ignore, go to see, it will still have some gains. 7. For more information and photos about the museum of China Pearl Abacus, please refer to my Trip.com travel notes, "I have seen Ruyi, I have seen the abacus, I have not seen Ruyi Abacus, if you want to see Ruyi Abacus, please come with me to visit the China Pearl Abacus Museum in Nantong", link address: http://you.ctrip.com/travels/nantong85/3256349.html