"Indeed," said Chu Xujin. "But, fifth sister, there are no obvious external injuries on the body, and even the usual changes expected on a corpse are not present. How can we determine the cause of death?"
"Third brother, take out a silver needle."
"Alright." Chu Xujin immediately opened the autopsy tool kit and handed a silver needle to Chu Qingzhi.
Chu Qingzhi examined the needle and inserted it into the corpse's heart. After a while, she pulled it out, but the needle did not change color.
Chu Xujin observed the needle and said, "This rules out several common deadly poisons."
Yuan Hongjun and others had conducted experiments. Several deadly poisons readily available in the Daling Dynasty could cause a silver needle to change color, and each poison would produce a different color.
Chu Qingzhi fanned the air and sniffed the needle, "Bring the medicinal solution over."
