Among the tactics that the Chinese government uses to stop self-immolation in Tibet, they provide awards to the friends and families who they blame for actually helping sacrifice those lives.
In order to stop the self-immolations that occur in Tibet, they should look into the reasons these activities are carried out.
For example, there is Tulku Sopa Rinpoche, who self-immolated, and the disciple Namkha Jigme, who has been imprisoned for trying to advocate and let the world know about the self-immolation and the reason to carry on this activity. Also, there are the cases of Tenzin Wangmo, who also self-immolated, and of Lho Yonten Gyamtsho, who tried to let the world know about the reasons she had carried on this activity and who has been imprisoned for about seven years. Her whereabouts are unknown as well.
As an example, this picture that I am holding is Tsering Kyi. She set herself on fire. She was a young student. The family members tried to obtain the dead body, but China basically confiscated the dead body and said that if they wished to receive the body, they would have to sign an agreement that they would like to go against the wishes of His Holiness and that her self-immolation had nothing to do with the political situation inside Tibet. The family did not agree to that, especially the mother.