Correct
乘便
/ chéngbiàn /
Strokes
Definition
at your convenience
Example
As an Adverb
at one's convenience/leisure; when it is convenient; on one's way
1
Qǐng
请
nǐ
你
chéng
乘
biàn
便
bǎ
把
zhè
这
fēng
封
xìn
信
tì
替
wǒ
我
jì
寄
le
了
。
Please post the letter for me at your convenience.