Introduction
Buddhism is a major world religion that originated in ancient India. It is based on the teachings of Siddhartha Gautama, who is also known as the Buddha. There are three major forms of Buddhism: Theravada, Mahayana, and Vajrayana. The major form of Buddhism practised in Tibet, China, Korea and Japan is Mahayana.

Mahayana Buddhism
Mahayana Buddhism is one of the two major branches of Buddhism. It is practiced in many countries including China, Japan, Korea, Tibet, and Vietnam. Mahayana Buddhism is also known as the "Great Vehicle" because it emphasizes the importance of compassion and the salvation of all beings. The goal of Mahayana Buddhism is to achieve enlightenment not only for oneself but also for all beings.

Mahayana Buddhism is characterized by its emphasis on the concept of Buddha-nature, the belief that all beings have the potential to become buddhas. Mahayana Buddhism also places great importance on the bodhisattva ideal, the idea that one should strive to become a bodhisattva, or an enlightened being who works for the benefit of all beings.

Mahayana Buddhism is also known for its emphasis on the use of skillful means, or upaya, to help others attain enlightenment. Skillful means refer to the various methods and practices that are used to help others on the path to enlightenment.

Conclusion
In conclusion, the major form of Buddhism practised in Tibet, China, Korea and Japan is Mahayana. Mahayana Buddhism is characterized by its emphasis on compassion, the salvation of all beings, Buddha-nature, the bodhisattva ideal, and skillful means.