The Core Principles of Tai Chi According to Grandmaster Chen Xin (陈鑫) Introduction: Grandmaster Chen Xin (陈鑫, Chén Xīn), the author of "The Illustrated Book of Tai Chi Quan" (太极拳图说, Tàijíquán Túshuō), was instrumental in systematically documenting and explaining the theory of Chen-style Tai Chi (陈氏太极拳, Chénshì Tàijíquán). The following principles are distilled from his legacy. 1. The Mental Foundation: "The Mind is the Commander" (以心为主, Yǐ Xīn Wéi Zhǔ) A Calm Mind, A Relaxed Body (心静身舒, Xīn Jìng Shēn Shū): Begin from a state of stillness. Stand centered and upright, free from tension and distraction. The mind must be serene and peaceful for the body to respond with precision and agility. This is the state of Wuji (无极, Wújí)—the primordial state of undifferentiated chaos before Taiji emerges. Use Intention, Not Brute Force (用意不用力, Yòng Yì Bù Yòng Lì): Every action originates from conscious Intention (意, Yì), not from crude, muscular strength. As the classics say: "Use the mind to move the Qi... use the Qi to move the body" (以心行氣...以氣運身, Yǐ Xīn Xíng Qì... Yǐ Qì Yùn Shēn). True internal power (Jìn, 劲) flows naturally only when thought and movement are unified. Maintain Central Equilibrium (守中, Shǒu Zhōng): Balance is the root of stability. Always keep the body centered and upright; avoid leaning or tilting. This is the principle of Central Stability (中定, Zhōngdìng), one of the Eight Gates (八门, Bā Mén) of Tai Chi. Let the spirit remain peaceful, alert, and in harmony with the breath. 2. The Core Movement Principle: "Chan Si Jin" (缠丝劲, Chán Sī Jìn - Silk-Reeling Energy) This is the living soul of Tai Chi—a spiraling energy that connects all movements into one continuous, flowing whole. Every motion of the hands, feet, or torso follows a circular, coiling path, like silk being drawn from a cocoon. Types of Silk-Reeling Energy: By Direction: Forward (进, Jìn), Backward (退, Tuì), Left (左, Zuǒ), Right (右, Yòu), Upward (上, Shàng), Downward (下, Xià).