@hidden In Chinese Buddhism in particular, sunyatta throws a wrench in everything because everything you say conventionally is negated by the fluidity of its substance.

For example, a Buddha does not enter Nirvana until hell is emptied, but also, all beings awakened at once when Shakyamuni did, but also Buddha Nature is omnipresent and we were already awakened, and this is possible because sentient beings are only conventionally separate, and placement in samsara is contingent on forgetting that from conventional, individual perspectives, so hell is already empty.

Also Pure Lands are already outside of Samsara for the Buddha, but not necessarily for others born there, so in another way, you can't necessarily disentangle Samsara from Nirvana.

Every category is fluid and can be multiple things at once, it makes understanding what's being said a nightmare.