classifier for long thin things (rivers, cracks etc), barriers (walls, doors etc), questions (in an exam etc), commands, courses in a meal, steps in a process
province (of Korea or Japan)
channel
method
doctrine
teachings
一定要
yat1 ding6 jiu3
must
拍照
paak3 ziu3
take a photo
之外
zi1 ngoi6
besides
Learn Stroke Order
See how to write "怡" with stroke-by-stroke animation