Why did the Shogun request the help of the Chinese Confucionist Hayashi Rinzan?

The Shogun requested the help of the Chinese Confucianist Hayashi Rinzan to provide philosophical and educational support in governance. Rinzan's expertise in Confucianism was seen as valuable for reinforcing the moral and ethical foundations of the samurai class, which was essential for maintaining order and loyalty in a period marked by political instability. His guidance aimed to strengthen the ideological framework of the Shogunate and promote a more cultured and educated ruling class.