张道陵 (Zhang Daoling) was a prominent figure in Chinese history, known as the founder of the Taoist religion. He lived during the late Han Dynasty and is often credited with establishing the Tianshi (Celestial Master) tradition, which emphasized spiritual practices and community organization. His teachings focused on achieving harmony with the Tao, or the fundamental nature of the universe. In addition to his religious contributions, Zhang Daoling is also recognized for his role in promoting the use of alchemy and healing practices within Taoism. His legacy continues to influence Taoist thought and practices, making him a significant historical and spiritual figure in China.