[FN#92] As we have already mentioned, Do-gen, the founder of the Japanese So To Sect, shunned the society of the rich and the powerful, and led a secluded life. In consequence his sect did not make any rapid progress until the Fourth Patriarch of his line, Kei-zan (1268-1325) who, being of energetic spirit, spread his faith with remarkable activity, building many large monasteries, of which Yo-ko-ji, in the province of No-to, So-ji-ji (near Yokohama), one of the head temples of the sect, are well known. One of his disciples, Mei ho (1277-1350), propagated the faith in the northern provinces; while another disciple, Ga-san (1275-1365), being a greater character, brought up more than thirty distinguished disciples, of whom Tai-gen, Tsu-gen, Mu-tan, Dai-tetsu, and Jip-po, are best known. Tai-gen (died 1370) and big successors propagated the faith over the middle provinces, while Tsu-gen (1332-1391) and his successors spread the sect all over the north-eastern and south-western provinces. Thus it is worthy of our notice that most of the Rin Zai teachers confined their activities within Kamakura and Kyo-to, while the So To masters spread the faith all over the country. The Shoguns of the Ashi-kaga period (1338-1573) were not less devoted to the faith than the Emperors who succeeded the Emperor Go-dai-go. And even Taka-uji (1338-1357), the notorious founder of the Shogunate, built a monastery and invited So-seki,[FN#93] better known as Mu-So-Koku-Shi, who was respected as the tutor by the three successive Emperors after Go-dai-go. Taka-uji's example was followed by all succeeding Shoguns, and Shogun's example was followed by the feudal lords and their vassals. This resulted in the propagation of Zen throughout the country. We can easily imagine how Zen was prosperous in these days from the splendid monasteries[FN#94] built at this period, such as the Golden Hall Temple and the Silver Hall Temple that still adorn the fair city of Kyo-to. [FN#93] So-seki (1276-1351) was perhaps the greatest Zen master of the period. Of numerous monasteries built for him, E-rin-ji, in the province of Kae, and Ten-ryu-ji, the head temple of a sub-sect of the Rin Zai under the same name, are of importance. Out of over seventy eminent disciples of his, Gi-do (1365-1388), the author of Ku-ge-shu; Shun-oku (1331-1338), the founder of the monastery of So-koku-ji, the head temple of a sub-sect of the Rin Zai under the same name; and Zek-kai (1337-1405), author of Sho-ken-shu, are best known. [FN#94] Myo-shin-ji was built in 1337 by the Emperor Hana-zono; Ten-ryu-ji was erected by Taka-uji, the first Shogun of the period, in 1344; So-koku-ji by Yosh-imitsu, the third Shogun, in 1385; Kin-Kaku-ji, or Golden Hall Temple, by the same Shogun, in 1397; Gin-kaku-ji, or Silver Hall Temple, by Yoshi-masa, the eighth Shogun, in 1480. 11. Zen in the Dark Age.