Preceptor Kai of Mt. Dayang addressed the assembly, saying, "The blue mountains are constantly walking. The stone woman gives birth to a child in the night."
The mountains lack none of their proper virtues; hence, they are constantly at rest and constantly walking. We must devote ourselves to a detailed study of this virtue of walking. Since the walking of the mountains should be like that of people, one ought not doubt that the mountains walk simply because they may not appear to stride like humans.
This saying of the buddha and ancestor [Daokai] has pointed out walking; it has got what is fundamental, and we should thoroughly investigate this address on "constant walking". It is constant because it is walking. Although the walking of the blue mountains is faster than "swift as the wind", those in the mountains do not sense this, do not know it. To be "in the mountains" is "a flower opening within the world". Those outside the mountains do not sense this, do not know it. Those without eyes to see the mountains, do not sense, do not know, do not see, do not hear the reason for this. To doubt the walking of the mountains means that one does not yet know one's own walking. It is not that one does not walk but that one does not yet know, has not made clear, this walking. Those who would know their own walking must also know the walking of the blue mountains
The blue mountains are not sentient; they are not insentient. We ourselves are not sentient; we are not insentient. We can have no doubts about these blue mountains walking. We do not know what measure of dharma realms would be necessary to clarify the blue mountains. We should do a clear accounting of the blue mountains' walking and our own walking, including an accounting of both "stepping back and back stepping". We should do an accounting of the fact that, since the very time "before any subtle sign", since "the other side of the King of Emptiness", walking by stepping forward and back has never stopped for a moment.