Regarding the destruction of the void, cultivating void is the most severe.
Because by the time one reaches harmonization, a cultivator becomes part of the Great Tao and the Universe itself, so things like spiritual energy and power are completely useless to them. Naturally, they wouldn't refine the void or even destroy the universe.
And when it comes to pure yang, it's even more so, as they are already one of the rulers of the universe.
Using the Immortal Gate as an example, it's like a worker (cultivator) becoming a shareholder (universe).
The interests of the company (universe) are the interests of the worker (cultivator).
If the universe runs into problems, these beings will fall along with it, fading and disappearing.
And some wise cultivators will find ways to avoid this fate.
This is transcendence.
As long as you've earned enough, grown strong enough before the company goes bankrupt, you can survive annihilation, maybe even retire and enjoy life.
