The poor defenseless dragon had to take his punches as they came until it had reached its limit. Then its body would collapse, and it would die.
In this case, the limit of the dragon can only be decided by the will of Oceania, not the dragon. As long as Oceania can support the dragon, he won't be able to kill the dragon.
As a large world, Oceania should have between 1,000,000 years of lifespan and 10,000,000 years of lifespan. The will of Oceania actually has 7,014,825 years of lifespan. But the will of Oceania can't spend all of these on a dragon that isn't the dragon king.
Of course, the will of Oceania didn't want him to kill this dragon because the death of this dragon, no matter how weak and useless it is, would lead to the weakening of the dragon king. So, the will of Oceania was willing to spend 33% of its total reserves on keeping this dragon alive.
