C23 Suspicion of 2 murders(4)

Ding Wei was startled. He went up to stop Wang Jiuhua's self-torturous behavior and asked, "Aunt Wang, just what is going on?"

"This happened 18 years ago. That year, my family's boss met with an accident in the coal kiln."

Eighteen years ago? Something happened to the kiln? Ding Wei's heart thumped. His heart suddenly dropped. He felt as if his heart had been pierced by a awl