Correct

霍霍

/ huò huò /
Strokes

Example

As an Onomatope

sound of grinding knives

1
dāohuòhuò
磨刀霍霍
xiàng
zhū
yáng

sharpen a knife to kill pigs and lambs with

As an Adjective

shining

2
liǎng
yǎn
huòhuò
霍霍
shǎnguāng
闪光
  

His eyes flashed/sparkled.

3
Diànguānghuòhuò
电光霍霍
  

The lightning flashed.