China visa and number of photo needed

I am Malaysian visiting California now. I will be flying by China Eastern from San Francisco back to Kuala Lumpur. My flight transit Shanghai Pudong Airport for 25 hours 20 mins.

Since my flight ticket booked through Expedia, so I am provided by Expedia with hotel stay in Shanghai.

What type of China Visa application form, documents and number of photo needed for application of China Visa

Thank you
Tan Swee Ai