Sosan, also known as the Third Zen Patriarch, was a Chinese Zen teacher who lived during the 6th century. His teachings were highly influential in the development of Zen Buddhism and differed from those of other Zen masters in several ways.

Firstly, Sosan's teachings emphasized the concept of "no-mind" or "non-dualism." This idea suggests that the true nature of reality can only be understood by letting go of all conceptual thinking and dualistic distinctions. Sosan believed that the mind must be emptied of all preconceived notions and attachments in order to experience true enlightenment.

This emphasis on "no-mind" was in contrast to the teachings of other Zen masters who focused on the use of koans (paradoxical questions or statements) to help students reach enlightenment. Sosan believed that koans were a means to an end, but ultimately the mind must be free of all concepts and distinctions in order to fully understand the true nature of reality.

Secondly, Sosan's teachings also differed from other Zen masters in their emphasis on the practice of meditation. Sosan believed that meditation was the key to achieving enlightenment and that it was essential for students to cultivate a regular meditation practice in order to deepen their understanding of the true nature of reality.

Other Zen masters may have placed more emphasis on other practices, such as chanting or physical labor, but Sosan believed that meditation was the most direct path to enlightenment. He taught that through meditation, one could cultivate a clear and focused mind, free from distractions and attachments, which would lead to a deeper understanding of reality.

Lastly, Sosan's teachings also differed from other Zen masters in their accessibility. He believed that enlightenment was not reserved for a select few, but that it was attainable for anyone who was willing to put in the effort and practice diligently. This was in contrast to some other Zen masters who believed that enlightenment was only achievable for those with a certain level of intelligence or spiritual aptitude.

In conclusion, Sosan's teachings differed from those of other Zen masters in their emphasis on "no-mind," the importance of meditation, and their accessibility to all individuals. His teachings continue to be influential in the practice of Zen Buddhism today, and his emphasis on the direct experience of reality through meditation remains a core principle of the tradition.