Since Ackster possessing blood, which let Shanshi recover and maintain his peak strength, was the problem in this battle of attrition, Ackster just had to stop having blood.
Surprisingly enough, Ackster came up with two ideas for how he could make that happen.
The first one was a derivation of his martial arts. He could treat others as water and imagine them as water instead of flesh and blood. Why couldn't he do the same to himself? If his blood weren't blood but water instead, it would be useless to Shanshi. What kind of vampire drinks water?
The other idea Ackster had was to drain his body of blood and control Stubborn Well-Being so it didn't regenerate his blood. Doing that would limit his combat ability and wear his body down even quicker. But it would at least stop Shanshi from drinking his blood.
However, unlike with transforming himself to water, Ackster at least had an idea for how to remove his blood from his body.
