長文読解（人文系・自然科学系の文章）- 問題120

Traditional tea ceremonies have evolved far beyond simple beverage preparation to become profound expressions of cultural identity and mindfulness. In Japan, the art of chado, or "the way of tea," emerged during the 16th century as a synthesis of Zen Buddhism and aesthetic philosophy. Master Sen no Rikyu established four fundamental principles: wa (harmony), kei (respect), sei (purity), and jaku (tranquility).
The ceremony itself involves precise movements, specific tools, and seasonal considerations that reflect deep appreciation for impermanence and natural beauty. Modern practitioners report that regular participation in tea ceremonies significantly reduces stress levels and enhances concentration. Research conducted at Kyoto University found that participants showed a 30% decrease in cortisol levels after just eight weeks of practice.
Today, tea ceremony schools worldwide preserve these ancient traditions while adapting to contemporary lifestyles. The practice has expanded beyond Japan, with dedicated tea houses operating in over 40 countries, demonstrating how cultural traditions can transcend geographical boundaries while maintaining their essential spiritual significance.