规则不是一成不变的。
Rules are not set in stone.
一成不变
(idiom) immutable; impervious to change; set in stone
HSK 3.0 · Band 7 trad. 一成不變
Watch it being written
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
一
成
不
变
Nice writing!
Build with these blocks
Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.
一
成
不
See it in sentences
大家不喜欢一成不变。
People do not like things staying the same.