Correct

烟灰

/ yānhuī / 
Strokes

Definition

cigarette ash

Example

As a Noun

tobacco/cigarette ash

1
Tā
他
dǎn
掸
qù
去
luò
落
zài
在
xī
膝
shàng
上
de
的
yī
一
diǎn
点
yānhuī
烟灰
  
。

He dusted the ash that had fallen into his lap.

2
Dàn
弹
diào
掉
xuějiā
雪茄
shàng
上
de
的
yānhuī
烟灰

knock off the ashes of one's cigar; shatter the ash from one's cigar

As a Noun

soot

3
Yānhuī
烟灰
nóngdù
浓度

soot concentration