reporter david mackenzie has more. >> reporter: if you didn't go his productivity productivity came toays he cannot get any mount admits an invitation for test driving from a foreign company. now cut off like millions of others. >> reporter: why do you think the government did this? >> i do not know. >> reporter: do you have any gas? guess? >> i do not understand he says is political. >> reporter: the chinese communist party and forces a draconian system of censorship of the web. the committee will more than 6 million chinese can search they have done it for years. >> people call it the great fire wall of china and the scope of its censorship is breathtaking creek if you go to side like twitter google or facebook this is what you get. >> reporter: attorney search sites made up of of terms are blocked some are obvious grist to the party like tank man or end one- party dictatorship. but then... >> reporter: jeremy has attacked the internet here for more than two decades he says the party is becoming more aggressive. >> reporter: >> it is kind of like gloves are off, we are going to manag