There are only five leaders in the world whose bodies are permanently preserved. What is intriguing is the deep imprint of technological breakthroughs and the era's choices hidden behind them. An unknown game of strategy greatly influences the fate of these bodies.

Lenin is a pioneer in modern body preservation. After his death in 1924, a normal burial was initially planned. However, the wave of public mourning changed the plan. As the body began to decompose, emergency freezing was carried out, opening the path to permanent preservation.

Soviet scientists repeatedly experimented and developed a special preservative solution. By replacing the body's water content, they suppressed bacteria and laid the core technological foundation for eternal preservation. Lenin's tomb is equipped with a constant temperature cooling system, and laboratory experts perform weekly restorations. Regular comprehensive maintenance, and sometimes minor transplant surgeries, are necessary. Through these strict processes, the body has been kept in perfect condition for nearly 100 years.

Stalin's body is also that of a Soviet leader. He was buried in Lenin's tomb in 1953 but was moved in 1961 for cremation because his treatment conflicted with mainstream values. The handling of Stalin's body is a prime example where historical choice, rather than technology, played a decisive role.

Ho Chi Minh of Vietnam wished to be cremated during his lifetime. However, his successor decided on preservation. During the Vietnam War, his body was secretly stored in a mountain cave for five years, with Soviet experts completing the embalming process while avoiding bombings in the underground cave.

The preservation of Nétú of Angola was even more challenging. Soviet specialists specially developed pigmentation preservation techniques for black skin, solving the problem of pigment leakage. Only on his birthday each year can the public visit and view his body.

In the case of Gottwald, the preservation technology was insufficient. His body decayed in 1962 and was cremated. Dimitrov's body was preserved for over 40 years but was moved for cremation amid the upheavals in Eastern Europe and buried in a cemetery.

Including the example of Stalin's body, the course of history alters the final disposition of these remains. Eternal preservation of bodies is not merely a technological achievement but a product of historical choices. The body in the crystal coffin is both a testament to technology and a mirror of history. Only with both technological support and the recognition of the era can eternal preservation be realized.