@Ernie it's now available for purchase and delivery in China https://www.apple.com.cn/shop/buy-vision/apple-vision-pro

or is it only YES on that date, not before?

I'm interpreting this to mean on that date, otherwise I'd have said "by end of year 2024". What do you think?

I agree, the description literally says "on that day." Still sucks to have the mana tied up for what is extremely likely to remain YES by then.