改 (pinyin: gǎi, written "gai" or "gai") means to alter, to change, to improve, to remodel. Below: its meaning, pronunciation, stroke order, and example sentences, so you can learn how to read, say, and write 改.
Meaning
to alter, to change, to improve, to remodel
Stroke order
改
Examples
您拿着车票去三号窗口改签,免费的。
nín ná zhe chē piào qù sān hào chuāng kǒu gǎi qiān, miǎn fèi de.
Take your ticket to window three to change it. It's free.