Shingon, also known as Esoteric Japanese Buddhism, has a rich history that has evolved and changed over time. This unique form of Buddhism was founded by the monk Kukai in the 9th century and has since undergone various transformations and adaptations.

One major change that occurred in Shingon was the introduction of new practices and teachings. Initially, Shingon focused on the use of mantras and mudras (hand gestures) as a means of achieving enlightenment. However, as it spread throughout Japan, it incorporated elements from other Buddhist schools, such as Pure Land and Zen. This resulted in a more diverse and comprehensive approach to spiritual practice within Shingon.

Another significant evolution in Shingon was the incorporation of local deities and folk beliefs into its teachings. This was a strategic move by Kukai to make Buddhism more accessible to the Japanese people and to establish it as a national religion. As a result, Shingon became deeply intertwined with Japanese culture, and many Shingon temples were built on sacred sites that were already revered by the local population.

In addition, Shingon has also undergone changes in its organizational structure. In the early days, it was a highly centralized and hierarchical system, with Kukai as its sole leader. However, over time, this structure gave way to a more decentralized approach, with multiple branches and sects forming within Shingon. This allowed for more flexibility and diversity within the tradition, leading to further growth and expansion.

One of the most significant changes in Shingon occurred during the Meiji period in the late 19th century. With the introduction of Western influence in Japan, Buddhism, including Shingon, faced challenges and had to adapt to the changing times. This led to a modernization of Shingon, with a focus on social welfare and community service, in addition to spiritual practice.

Today, Shingon continues to evolve and adapt to the modern world. With advancements in technology and communication, Shingon has expanded its reach beyond Japan and has gained followers around the world. It has also incorporated modern teachings and practices, such as mindfulness and meditation, into its traditional teachings.

In conclusion, Shingon has evolved and changed significantly over time, incorporating new practices, adapting to local cultures, and responding to external influences. However, at its core, it remains a deeply spiritual tradition that seeks to help individuals achieve enlightenment and live a meaningful life.