They are not all blue. The supervisors are different, the batches shipped from the factory are different, and the color and method of signatures will be different.

1. Notes on Dunhuang guzheng:

1. The signature on the certificate is handwritten or stamped, but please note that the guzheng produced under the supervision of teacher Li Sufang is all handwritten. , Teacher Li used black carbon pens before February 2018, and blue ballpoint pens used after that. The ones supervised by other teachers will have stamps and handwriting. Different batches shipped by the factory will be different.

2. The flying fairy of the Dunhuang logo on the side panel is not necessarily clear. The flying fairy is engraved by the manufacturer's machine abrasive tool and is generally not processed twice. Some patterns will appear a bit blurry.

3. Dunhuang guzheng does not necessarily have the word "Dunhuang" engraved on the code. The mid- to low-end zithers do not have the word "Dunhuang" engraved on the code. For example, 696D and 694KK are not engraved, and 695/698 Products of the series and above are engraved on the Zheng code, such as 698T calligraphy peony, 698JM flowers like a dream, and 5698JT ladylike.

4. The soles of guzheng guzhengs do not necessarily have anti-slip grooves. At present, the 696 series Dunhuang guzheng basically does not have anti-slip treatment, while the 694 series and above have anti-slip treatment.

5. The Dunhuang logo label on the panel is concave and convex, not completely flat.

6. Not all Dunhuang guzhengs are signed. Those without signatures are not necessarily fakes. When the guzheng father Xu Zhengao was alive, only some models were signed by the guzheng father. In April 2019, the guzheng father After his death on September 9th, there will no longer be signatures. It cannot be ruled out that some old goods stocked by merchants are signed.

2. Dunhuang guzheng is a specialty product of Shanghai National Musical Instruments Factory No. 1. Shanghai National Musical Instruments Factory No.1 is located in Qibao, a thousand-year-old town in Shanghai, with a construction area of ??14,181 square meters. It is the largest production base for Chinese national musical instruments. . The company integrates R&D, production and sales, with nearly a thousand employees and more than half of the country's national-level Chinese musical instrument production technicians. After more than 50 years of ups and downs, it is now the leader in the industry. It owns three holding subsidiaries and the famous brand "Dunhuang".

3. The goddess Feitian in the product trademark is a gorgeous image of national art. Just like our Dunhuang products, each one is unique and witnesses the development of Chinese national musical instruments. With our efforts and yours With the support, Dunhuang products have become the number one selling national musical instrument brand in the country.