Although Gu Chenglin did not know what she was up to, he still obediently went to collect the oil lamps in the nearby houses.
When he brought it over, Zhou Ying put the knockout powder inside each oil lamp and covered them with a layer of paper to prevent the oil from spilling.
After she was done, she lit one up and threw it in the middle of the five people below.
After the oil lamps fell to the ground, they exploded with a bang and burned furiously. Of course, the knockout powder also quickly evaporated.
The four of them instantly fainted and were ignited in flames.
However, there wasn't much oil, and the floor was made of stone, so the flames quickly extinguished after their clothes and hair were burned off.
"Bring the other oil lamps back to the room," Zhou Ying said.
After saying that, she took two oil lamps and entered the room, with Gu Chenglin immediately following in with the remaining two.
