PS: This chapter is an additional update as a reward for the generous support from Alliance Leader Big Belly Xiao Cai 666.
Currently in Jianghu, it's true that quite a few people possess the cultivation techniques of the Blood Demon Sect, but most of them are only partial texts.
Just like Qi Long under Su Xin's command, who is cultivating a partial text, its power can only be considered mediocre, at best offering a shortcut to some quick progress.
These people are unable to stir up any storms. If seen, they are killed; if not, then it's left as is.
Now, it is known that only two people possess a large number of Blood Demon Sect's cultivation techniques, one of them is Yama Heavenly Son, and the other is Su Xin.