What do you mean, a sweet-talking sword? The origin of idioms and the explanation of detailed words

The phonetic notation form is ㄡㄧˋ?ㄨˋㄐㄧㄢˋ Chinese Pinyin K ǒ u mù f ù jià n Source? Ji Tang? In the first year of Tianbao of Xuanzong: "The world called Li" with honey in his mouth and a sword in his belly ". This sentence means that on the surface, it is amiable and sweet to people, but in fact it is insidious and cunning, like hiding a sword. The definition describes the cunning and insidiousness of two-faced people. It is to describe a person who speaks well, but has a sinister heart and wants to frame people everywhere. Honey, honey. Abdomen: belly. Sweet words are bad thoughts that harm people. Describe a person's mouth, sweetheart, poison, insidious and cunning. " Compared with the "belly sword", there is a turning point before and after. Dear: Don't write "rice". Ex.: This fellow has a sweet mouth and a sword in his mouth. He has just done something he hates and is also a friend. (Ming? Wang Shizhen's The Story of Feng Ming (the 25th time) Zhang Laosan is a mysterious man, and many people have suffered from him. Don't believe his sweet words. That man is secretive and treacherous, so you can't be friends with him. He is duplicitous and secretive, so everyone should stay away from him and beware of such people. This man is full of empty talk, saying good things and doing bad things. Similar words are sweet mouth and sword belly, hidden knife in honey, hidden knife in laughter, cruel mouth, glib mouth and tongue, insincere, duplicity. Words are consistent in appearance, aboveboard and consistent in heart.