This Martial Saint's Health Bar is Too Thick!

In the twenty-seventh year of Hong Guang, the allied forces of seven nations invaded the Great Blue Dynasty.
Rifled muskets, mortars, and armored vehicles combined into a steel tide, were ultimately shattered by the Great Blue's armored cavalry.
Muscle, magic, firearms, cannons... the new and the old powers continuously collided.
In an era of great strife, Li Fei, with the help of a Ten Thousand Blood Bead, gradually became an existence akin to a BOSS:
'Is this the extent of your damage? You haven't even taken off one-thousandth of my health.'
'You don't think this is enough to kill me, do you?'
'Don't rush, the second phase is up next!'