In the Sakoku period of the Edo period, there was no direct contact with the West, but Rangaku became popular by encouraging importation of Western books translated in Chinese from China during the Kyōhō Reforms. Maeno Ryotaku and Sugita Genpaku translated the Dutch "Tafel Anatomie" into Japanese. Dutch learning unfolded to other Western studies such as British, French and American studies by the late Tokugawa era. The manner of "Japanese spirit, Western civilisation" was completed by Sakuma Shōzan’s straightforward expression, "Eastern ethics and Western technology". Because Takano Chōei and Watanabe Kazan criticized Sakoku strictly, they were oppressed by the Tokugawa shogunate.