Need to know about night train and recommend for my trip

Dear
I have a plan to go to beijing by start from Guangzhou.

My plan will start at Guangzhou and stop over at Shanghai for 1-2 day and then to Beijing 1-2 day and then go back to Guangzhou.

I need to check with you that do you have a night ride for
- Guangzhou to Shanghai
- Shanghai to Beijing
- Beijing - Guangzhou
and How much for each ticket ?

or Do you have the better route to recommend for this trip ? I have a time about 1 week for stay at China.

Thank you