i can tell you categorically, no, they won't.
am i the only one who sees the irony in the US expecting china to bail them out in pakistan? the US is china's principal foe!
1. chinese ally vietnam defeated the us
2. chinese ally north korea fought the us to a standstill
3. chinese ally pakistan is defeating the us
score: china 2.5, us 0.5
any chance they are going to prevent #3 above? none whatsoever