Li Qinghe smiled and said,
"However, this pen is only a D-grade xenogeneic. It's not very dangerous. It was first found in an education institution in Nanming city. A tutor used this pen as usual, but that day, the pen carved words in his stomach. It was a blessing in disguise that it was not life-threatening. After that, the pen was kept by the local night watchman and escorted to the headquarters."
"D-grade xenogeneic? Are there many levels of xenogeneics?"
Lu Yuan was a little curious.
