Under the new rule, one can enter PVG or PEK without as visa as long as you are leaving for a third country within 72 hours.

My questions are as follows:

What would be the backlash if you stayed an extra 22 hours or so?

If one were to leave PEK for SIN via HKG (no stopover), would that be allowed?

Is it possible to obtain a double entry Chinese visa in HKG in just a few hours, like before noon if application done early morning?

I'm in HKG now, and discovered my visa expired last week, and I'm scheduled to leave for PVG Sunday, but could leave Monday afternoon.

Thanks for your help.