Huanggai Fenjiu can be identified by its trademark. The registered trademarks of Fenjiu are "Fen brand" and "Gujingting brand". The registered trademark "fenpai" is a circle with the word "fen" in cursive script inside. The word is golden and translucent, with no contact with the surrounding circle. The English letters on both sides of the trademark are clear. The trademark "Gujingting" consists of the front image of Gujingting and the three characters "Gujingting".

In addition to the two protruding black corners on the top of the pavilion in the picture, there are 16 vertical black lines, which represent the width of the pavilion tiles. The width and width are evenly spaced, and the gold lines are also clear. There are three gold characters of "Gujing Pavilion" on the black gold hinge plaque under the eaves of the pavilion. The "Fenjiu" and Gujing Pavilion patterns are all letterpress printed, with bright colors and neat edges.

The surface of the fake Fenjiu characters is bright and in contact with the circle. The two medals have rough printing patterns and the writing is blurry and dull. There are not 16 black lines on the top of the pavilion. There are 3 "Gujing Pavilions" under the eaves. The words are difficult to read clearly, and the word "book" on the "registered trademark" is written differently from the original.