They do not have zero allies.
They have Iran, but most of all they have the deep state, which includes the American deep state and the fake Biden administration at the moment.
MAGA patriots and much of the world stands against them, but the deep state is vast.
See the post above yours. Iran is not a good ally. Those nuts are just as likely to nuke China if they are having a bad turban day. Same with Pokkeystahn. Muzzies are so emotional.
Much of the developed world looks at China as a market and a place to get stuff manufactured. Beyond that, there is zero appetite to join a “Chinese bloc” of anything. The Chinese kinda/sorta have a foot-hold in Africa, which they are paying through the nose for.
They don’t even get along with their neighbors. Even the Vietnamese hate China — and the Chinese helped them win their war against America.