勿 is compound ideograph, depicting a knife cutting off the useless things such as melon skin, vegetable roots, etc. 勿 serves as a phonetic component to form characters.
勿 a knife cutting off the useless things
![勿 a knife cutting off the useless things](https://i0.wp.com/decodemandarinchinese.com/wp-content/uploads/2017/07/-e1499659228444.jpg?fit=529%2C300&ssl=1)
勿 is compound ideograph, depicting a knife cutting off the useless things such as melon skin, vegetable roots, etc. 勿 serves as a phonetic component to form characters.