Hi, 

I am planning a long trip to Japan, South Korea, China and Hong Kong. I will be meeting a friend in Japan who I met a few years ago. She is from Japan and lives in Tokyo. After this I want to travel around Japan, then to South Korea, then to China, mainly Beijing or Shanghai and then Hong Kong. I have not yet worked out the details but it will be a cheap/budgeted trip. I think in total it would take about 3 months.