I have a small nodeJS project i am planning to run especially for customers from China. I want to use http://heroku.com hosting.
What is the best strategy to be not blocked by Great China Firewall and to achieve normal speed for communication with Chinese cities.
Heroku provide hosting on dynamic, shared IPs. Here's someone getting blocked in China thanks to all the regular Heroku IPs being blocked: https://groups.google.com/forum/?fromgroups=#!topic/heroku/hdbXKnnFxTA
Using a shared service like Heroku means you can't prevent blocking by being careful with what you serve up - your IP can quickly change to one that is blocked.
The solution offered is to use their SSL service, which is $20 per month: https://addons.heroku.com/ssl
This may or may not work, though, since all it will take is for the SSL IPs to also get blocked.
This should provide you with what you need. How to stop sites from being blocked in China
For a list of keywords, check out this Link. Blocked and unblocked words and concepts in English are listed after the Chinese characters.