If this snake was the real Lishi Ye, didn't it mean this little animal was also cursed by his blood as well?
What He Jingyi meant was like this. To make sure that all the subordinates had no guts to betray him, his evil father always made demons, who called themselves most loyal followers of his, get cursed by He Jingyi's blood.
This way, it proved that these demons were actually loyal to He Tengfei to the extreme that they even dared to get cursed with black blood curse, willingly offering their lives to their lord's daughter.
Lishi Ye was also one of such bold and loyal followers of He Tengfei who dared to offer even his very own life to him by deliberately getting cursed. That's why He Jingyi thought he might be able to control the life of this little snake with his black blood curse even though he hadn't done anything to it so far. Why not make an experiment right away to confirm his suspicions?