Any hypothesis to remember 刑? Any easy way or background why
Well + knife is Punishment? Knife is related punishment, but after killing with knife any history to through them in the well?
wikitionary details about 刑:
Originally written as 㓝, phono-semantic compound (形聲, OC *ɡeːŋ): phonetic 井 (OC *skeŋʔ) + semantic 刂. Later corrupted as ⿰幵刂, phono-semantic compound (形聲, OC *ɡeːŋ): phonetic 幵 (OC *kŋeːn) + semantic 刂.
刑
根据说文解字，刑的左边在古代还真是个&quot;井&quot;，

井，法也。

注意此处的&quot;井&quot;并不是水井（well），而是&quot;整齐、有秩序&quot;
井


整齐，有秩序：～然。～～有条。


再查井的说文解字，会发现有

(丼)八家爲一丼

可能是古代比较早期的一种管理制度，看着像九宫格，中间空地不住人，看起来整整齐齐的样子。