The 1988 Yanghe Dunhuang Opera was fake. Methods to identify the authenticity of Yanghe Daqu wine: Trademark identification: genuine Yanghe Daqu is a registered trademark affixed to the entire bottle. There are four types of trademarks: The pattern of the Yanghe brand is a lamb surrounded by ears of grain. The pattern of the Yanghe card is the pattern of the Yanghe card plus the word Yanghe. The Dunhuang brand pattern is the flying fairy in the Dunhuang murals. The pattern of the Beauty Spring brand is a picture of rivers and rivers with the words Beauty Spring. The trademarks of Zhenjiu are all printed by Huaiyin Printing Factory, Wuxi Hongsheng Color Printing Factory and Siyang Printing Factory, with exquisite printing and clear patterns. The four trademarks Yanghe, Yanghe, Dunhuang and Meirenquan are all printed with registered trademark words, and are signed as produced by Yanghe Winery in Siyang, Jiangsu or produced by Yanghe Winery in Jiangsu, China. The trademarks of fake wines are printed roughly, with different fonts and inconsistent fonts, and the color registration of patterns and characters is inaccurate. Appearance identification: The wine body of Zhenyanghe Daqu is colorless and transparent. The trademark bottle is neatly affixed and the seal is hot affixed. There is a factory inspection certificate inside the Yanghe Daqu packaging box that leaves the factory. Fake wine mostly contains suspended matter and sediment, making the wine turbid. The decoration and sealing of the trademark are not standardized. Even if there is an inspection certificate inside the whole box of wine, the fonts are not uniform and the paper quality is very poor. Liquor quality identification: The real Yanghe Daqu Liquor has the characteristics of sweet, soft, clean and fragrant. Its aroma is soft, the taste is harmonious, mellow and sweet, the tail taste is refreshing and clean, and the aftertaste is long. Fake wine is of poor quality, either extremely spicy or bitter, has no fragrance, and lacks alcohol content. This kind of wine often contains excessive amounts of fusel oil and methanol, making it harmful but useless after drinking.