Donald thought for a moment before he said, “There are really not that many coal mines in the South Region, so I really do not know anyone who runs a black coal mine.”

As he spoke, he seemed to have recalled something, and he laughed as he said, “However, I do have a childhood friend who runs a brick factory at home. The work at the brick factory is not as easy compared to the coal mine. You can send Charlie’s mother-in-law there to work as a coolie!”

Christopher immediately smiled as he said,