Yellow. 2 yuan and 5 yuan duck necks bought in the canteen are all yellow cards. Huang has not changed his youth for more than 20 years, and it has been like a day for more than 20 years. He inherited the craftsmanship and craftsmanship, made brine with ingenuity, and made ducks with ingenuity. Just because that bite can touch the good taste of you and me, that bite can make the moment of happiness light up.