I am visiting China on M type valid utill 9th Jun. I entered on 10th May and visa is for 30 days.

However the problem is my connecting flight is on 10th Jun. i.e. 1 day after the entry permit expires.
Please let me know if there shall be a problem at Exit? Because I am already on domestic flight to leave on 9th Jun but my connecting flight is on 10th Jun.

1- Will there be a problem, if I just leave.
2- How can I extend the visa, somebody told me, if i apply on 8th Jun, there are chances that they can extend the visa.
3- What if I need extension for more days? Will it be possible.