What Chinese demands? Do you mean for India to totally leave the disputed land and sign buffer agreements? That is the negotiation demands from China.
Pre-Galwan status quo means India can patrol as frequently as it likes
https://www.thehindu.com/news/natio...than-china-says-v-k-singh/article33774108.ece
" “Let me assure you, if China has transgressed 10 times, we must have done it at least 50 times,” he added." - from VK Singh.
I think this status quo is unacceptable to China since it gives India a channel to Aksai Chin, in fact the whole area is open to access by India and India will in future simply conduct non stop patrols due to having much more available man power so close to this area whereas China's forces and manpower are in the east and center.
Of course India finds 2019 conditions acceptable since it still gets access. This is why China is demanding buffer which means India cannot access this area and even further away from Aksai Chin.
India is not accepting! When did I say India should accept? Clearly India accepted previous agreement of buffer only because PLA held those positions. Now PLA has left India is not accepting any buffer and leaving the area.
China is not getting more territory but with a buffer, it avoids future confrontation which is doesn't like doing even according to VK Singh. This also allows China to totally secure Aksai Chin which India claims. Wtih a total buffer, China seals India off from Aksai Chin. It also means India will not even gain the land next to it and no more confrontations against patrol units.
the main difference between 2019 status quo and new one China is aiming for is the total buffer of this disputed area while China keeps Aksai Chin and the benefit is no more confrontations and patrolling to deal with. MH Yang is suggesting the buffer is something just for India and if China secures the buffer deal, due to superior force, China will simply slowly take over it.