Correct

响头

/ xiǎng tóu / 
Strokes

Definition

to bump one's head/to kowtow with head-banging on the ground

Example

As a Noun

kowtow (with one's forehead knocking against the ground and making a sound so as to show one's great gratitude, reverence, etc)

1
Kē
磕
sān
三
gè
个
xiǎngtóu
响头

knock one's head three times on the ground