Dear Sir, I am shereen who asked about the documents needed for a transit visa to Guangzhou.

Shereen, usually, you can apply for a transit G type by providing your passport and its copy, the application form, attached with a passport-style photo and the onward ticket.
If you cannot get it by yourself, you can ask for help from an agency and maybe the agency can find a way to solve this problem.

thank you dear. the embassy refused to give transit visa saying they do not have it in Lebanon. after managing to find an invitation letter they refused my daughter passport since it expires in November |(but we have just taken the visa from new zealand last week). we are working out a way to change our plan. I thought having booked with china southern airline and paid my trip and having evidence and passport full of visas, a job, bank account, and evidence of return since the rest of the family is here would be ok to get it. I hope this would be taken into consideration in the future for other people... thank you for your prompt reply