Suyin mastered the art of metalbending through diligent practice and a deep understanding of the earth within metal. Her control over metal was so precise that she could bend even liquid metal that she couldn't see, as demonstrated when she removed most of the mercury from Korra's body. Suyin's metalbending skills were also put to great use in combat, allowing her to hold her own in a lengthy fight against Kuvira. She believed that the only real limitation in learning metalbending are the ones a person places on themselves, a philosophy that likely contributed to her mastery of the art.