chapter 235 The Lin family’s handle

"Okay! Then, let's just sign the letter of undertaking! Bring me a pen and paper!" The middle-aged man continued to agree boldly without any hesitation.
"No, don't use a pen. Sign with your blood!" Michael said.
"Oh?"
The middle-aged man frowned.
Writing with blood and writing with a pen held significantly different meanings.
If a document was signed in blood, it was highly recognized in martial arts or ancient medicine, even though it had no legal effects.
The middle-aged man hesitated.
The...