You can verify the authenticity of Moutai Feitian bottles using an official Moutai authenticator. While activating the light and looking through the viewfinder, look for these anti-counterfeiting signs on the bottle cap:

• The sides of a Moutai Feitian bottle cap should appear rainbow with a reflective effect.
• The top of the cap should appear pale yellow-ish in color.
• When viewing the cap from directly above, black spots will appear on top of the yellow circle and will shift with the movement of the bottle.