Observe the rubber caps and ribbons.

1. Observe the plastic cap: the real wine plastic cap has no signs of opening, and the rubber cap can rotate 0.5 to 1 cm; the fake wine plastic cap has signs of opening, and the rubber cap rotates too flexibly.

2. Observe the streamers: the two streamers of real wine are the same length, and the bottom of the streamer is at the hook of the word "Mao"; the streamers of fake wine are one long and one short, and the position of the streamers is too short or too long.