In fact, ancient books rarely say "avoid spicy", but generally say "avoid five pungent" and "avoid pungent taste"

Orfila

Five spices refer to five kinds of spicy vegetables, also called five meats, which belong to meat and spices. Five spices first appeared in Treatise on Febrile Diseases in Han Dynasty. For example, after taking Guizhi decoction, "don't eat cold, sticky, meat, spiced, wine and cheese, smelly and disgusting".

In Ming Dynasty, Li Shizhen regarded garlic as one of the five spices in Compendium of Materia Medica, and recorded three understandings of the five spices, namely, bodybuilders thought the five spices were garlic, garlic, leek, mustard and coriander, while Taoists thought the five spices were leek, onion, garlic, mustard and coriander.