大方廣佛華嚴經隨疏演義鈔 9.40

9.40

The commentary's words, "There is yet another category of faculties..." and so forth: having cited and listed the preceding four gates, this introduces the fifth, explaining that the fifth gate is not subsumed under the previous four. The commentary's words, "Sixth, the exoteric and esoteric are simultaneous," refer to the two teachings among Tiantai's eight teachings: the secret and the indeterminate.