Correct

趁热

/ chèn rè / 
Strokes

Example

As an Adverb

while it is still hot

1
Chèn
趁
rè
热
bǎmiàn
把面
chī
吃
le
了
  
。

Eat the noodles while they are hot.

As an Adverb

act before it is too late