Ping Opera, one of the traditional five Chinese operas, is popular in Northern China, especially in Liaoning. How to keep the best moments of the classic operas? Shenyang Theatre of Ping Opera borrows the practice of the Chinese Opera Image and Sound Project. After recorded by modern scientific and technological means, traditional plays, newly edited historical dramas and modern plays are digitized and converted into files for preservation, so the famous plays can be kept alive permanently.