Yes, Japan's isolationist policies had a profound impact on religious practices. The Tokugawa shogunate implemented sakoku partly to curb the spread of Christianity, which had been introduced by European missionaries and was seen as a threat to the established order. By expelling missionaries and banning Christianity, the shogunate reinforced Shinto and Buddhism as central to Japanese identity. The period of isolation saw the growth of 'Neo-Confucianism' and 'National Learning', which emphasised traditional values and indigenous spiritual practices. The government's tight control over religious life during this period shaped the religious landscape of Japan, leading to a syncretic religious culture that remains characteristic of Japan to this day.

The long-term consequences of China's isolationist policies were profound, leaving the nation ill-prepared for the aggressive expansion of Western imperial powers in the 19th century. By the time of the Opium Wars, China's technological and military capabilities were significantly outmatched by those of the Western powers. The isolation had led to economic stagnation, a lack of industrial development, and a complacency within the Qing government, which believed China was still the preeminent world power. This misperception, coupled with the lack of technological progress, resulted in a series of unequal treaties and concessions that severely compromised China's sovereignty and initiated a period of internal turmoil and external domination known as the "Century of Humiliation."

Isolationist policies had a pronounced impact on the arts and literature of both China and Japan, albeit in differing ways. In China, the policies led to an inward turn in the literary and artistic spheres, with a strong adherence to classical styles and motifs. This conservative approach meant that Chinese art and literature during the Ming and Qing dynasties were characterised by their revival of ancient traditions and forms. In Japan, however, the isolationist Edo period was a time of significant cultural production and innovation. Japanese literature saw the development of genres such as haiku and the novel, while in the visual arts, there was an explosion of popular forms like ukiyo-e. These art forms not only reflected the values and tastes of Edo society but also contributed to the development of a distinct national cultural identity.

Isolationism played a critical role in cultivating Japan's unique cultural identity during the Edo period. The enforced national seclusion under the sakoku policy insulated Japan from foreign cultural influences, allowing indigenous art forms to flourish. This period witnessed the evolution of distinctively Japanese cultural practices and art forms such as the tea ceremony, ikebana (flower arranging), haiku poetry, ukiyo-e woodblock prints, and the development of Kabuki and Noh theatre. These cultural expressions reflected the values and aesthetics of Edo society and contributed to a strong sense of national identity that remained intact even after Japan reopened to the world.

Isolationist policies during the Ming and Qing dynasties resulted in a significant decline in technological innovation in China. While the Ming dynasty began with impressive achievements, such as the construction of the Forbidden City and the voyages of Zheng He, the subsequent turn towards isolationism saw a cessation of these maritime expeditions and a reduced focus on technological progress. The Qing dynasty continued this trend, as the state prioritised agricultural improvement and conservative cultural values over technological advancement. Consequently, China, which had been a world leader in technologies such as printing, gunpowder, and navigation, experienced a technological stagnation that contributed to its vulnerability in the face of Western imperialism during the 19th century.