Taboo 1: carrots, loofah and pumpkin yam contain rich and colorful vitamin C, while carrots, loofah and wax gourd contain rich and colorful vitamin C dissolving enzymes. If they are eaten together, the vitamin C in yam will be dissolved and destroyed.

Taboo 2: beef liver contains nutrients such as copper, iron and zinc, while yam contains vitamin C. When vitamin C meets metal ions, it will be destroyed by accelerating air oxidation.

Taboo 3: Alkaline food or medicine Dioscorea opposita contains pepsin, while alkaline ingredients will make pepsin ineffective, thus reducing the nutritional value of Dioscorea opposita.

Taboo 4: Shrimp, yam and shrimp are similar foods. If they are eaten together, they will cause nausea, vomiting, abdominal pain and other diseases.

Taboo 5: venison yam can't take venison, both yam and venison are astringent, and eating yam and venison together is easy to constipation.

Taboo 6: Fish, yam and fish can't be eaten together, including crucian carp and grass carp. If they are eaten together, nausea, retching and abdominal pain will occur.

Taboo 7: Sweet potato is a food for invigorating the spleen, enriching the blood and moistening the lungs, while sweet potato will stimulate the intestine, improve the intestinal peristalsis and have the effect of diarrhea. These two effects, in turn, will cause discomfort, nausea, vomiting and abdominal pain.

Taboo 8: Wumai yam and Wumai yam collide, and eating together will cause discomfort.