National Library of China
The copy kept in the Old Summer Palace was destroyed during the Second Opium War in 1860. The two copies kept in Zhenjang and Yangzhou were completely destroyed while the copy kept in Hangzhou was only about 70 to 80 percent destroyed, during the Taiping Rebellion. The four remaining copies suffered some damage during the Second Sino-Japanese War. Today, those copies can be located in the National Library of China in Beijing, the National Palace Museum in Taipei, the Gansu Provincial Library in Lanzhou, and the Zhejiang Library in Hangzhou.