This is blackmail.

"Okay." Long Fei nodded without asking any questions, then handed over a note and said.
"Brother Tang, Xiong Zhenshan left a note saying that his father has recovered and he will reward you handsomely someday. Here is the note and a piece of black wood." Long Fei handed over the white note and the black wood. Emory Williams took it and took a look. In the middle of the black wood, there was a seal-style word that looked a bit strange. It looked a bit like the word "agriculture" and a bit like...