It is caused by the external environment.

The Moutai trademark turned yellow in 2007, mainly due to the external environment. It may turn yellow over time.

Moutai is a specialty of Moutai Town, Renhuai City, Zunyi City, Guizhou Province, and a national geographical indication product of China. Moutai is China's traditional specialty liquor. It is one of the world's three most famous distilled spirits, along with Scotch whiskey and French Cognac. It is also one of China's three most famous wines, "Mao Wu Jian". It is also the originator of Daqu Maotai-flavor liquor, with a history of more than 800 years. The style and quality characteristics of Kweichow Moutai are "prominent sauce aroma, elegant and delicate, mellow body, long aftertaste, and long-lasting fragrance in the empty cup." Its special style comes from the unique traditional brewing technology formed over the years. The brewing method is different from The agricultural production in the Chishui River Basin is combined with seasonal production, Dragon Boat Festival and Double Ninth Festival, which have retained some traces of the original local life.