i am travelling to china overland from bangkok to catch my next flight leaving from hong kong, where i will then spend 2 weeks in korea, before flying to shanghai for 1 week. Is it a double entry visa that i will need? how long will this take to process as i also need my passport fairly quickly to sortout a thai visa extension..? can i also sort my hong kong visa from the chinese embassy? ..and could you give me an idea on price? many thanks! ;)