Just like he had planned. Zheng chose the Vampire Count bloodline.
“Vampire Count (rank) genetic mutation, rating 90, applicable to most movies. Has blood energy and access to most blood magic. Rank Count increases vitality substantially, can recovery from any injury as long as brain and heart are not destroyed. Owner will not be affected by sunlight and silver. Requires rank B reward, 3000 points, and Vampire Viscount mutation.”
This was one of the stronger rank B enhancements. It didn’t cost that many points but the rank B reward and the prerequisite made this stronger than the average rank B enhancement.