Of course, the simple answer is to apply for a Chinese visa at home.
Try to get a new Chinese visa to return overland.
You may have to show a Chinese visa when buying a ticket.
You may want to consider obtaining a Chinese visa to smooth your journey.
How can you know that your Chinese visa will expire.
In case you didn't realize, Chinese visas have three numbers.
And you can't have two valid Chinese visas on your passport at the same time.
The problem will be where to get a second Chinese visa.
Get Chinese visa out of the way immediately and then go for the India one.
I applied for a Chinese visa there a few weeks ago.