改（gǎi）
Origin:
甲骨文中，“改”的样子是一个小孩跪着，旁边有一只手，拿着棍子打他，要他改正所犯的过错。所以字的本义是“改变”、“更正”。
On oracle bone inscriptions, “改” resembles a kneeling child being beaten by a handheld stick as a way of urging the child to correct his mistakes. The character’s original meaning is “to change” or “to correct.”
Meaning:
to change, to correct
Words:
改变(gǎibiàn): to change
改革(gǎigé): to reform
改行(gǎiháng): to change one’s profession
改日(gǎirì): to change to some other day 改良：gǎiliáng/to improve
Sentences:
1、Wǒmen gǎirì zài jiějué zhège wèntí.
我们改日再解决这个问题。
我们改日再解决这个问题。
We will solve this problem some other day.
2、Jǐnián méijiàn, tā gǎibiàn le hěnduō.
几年没见，他改变了很多。
几年没见，他改变了很多。
We haven’t seen each other for years; he has changed a lot.
