China has tried, with varying degrees of success, to prevent Tibetans listening to or watching programmes broadcast from outside the country, or accessing any information about the Dalai Lama and the exiled government on the Internet.
But many Tibetans are still able to access such news, either via illegal satellite televisions or by skirting Chinese internet restrictions. The Dalai Lama's picture and his teachings are also smuggled into Tibet, at great personal risk.
Writing in the ruling Communist Party's influential journal Qiushi, the latest issue of which was received by subscribers on Saturday, Tibet's party chief Chen Quanguo said that the government would ensure only its voice is heard.
"Strike hard against the reactionary propaganda of the splittists from entering Tibet," Chen wrote in the magazine, whose name means "seeking truth".
The government will achieve this by confiscating illegal satellite dishes, increasing monitoring of online content and making sure all telephone and internet users are registered using their real names, he added, reports Reuters.
"Work hard to ensure that the voice and image of the party is heard and seen over the vast expanses (of Tibet) ... and that the voice and image of the enemy forces and the Dalai clique are neither seen nor heard," Chen wrote.
China calls the Nobel Peace Prize-winning Dalai Lama a "wolf in sheep's clothing" who seeks to use violent methods to establish an independent Tibet.
The Dalai Lama, who fled to India after a failed uprising in 1959, says he simply wants genuine autonomy for Tibet, and denies espousing violence.
Chen said the party would seek to expose the Dalai Lama's "hypocrisy and deception" and his "reactionary plots".
China has long defended its iron-fisted rule in Tibet, saying the region suffered from dire poverty, brutal exploitation and economic stagnation until 1950, when Communist troops "peacefully liberated" Tibet.
Tensions in China's Tibetan regions are at their highest in years after a spate of self-immolation protests by Tibetans, which have led to an intensified security crackdown.
Tibetan media reports that China has tightened control in Tibet after the Tiananmen crash, which the officials suspect to be a terrorist attack.
(With agency inputs)