Mountains and Rivers is the name of the format at SokukoJi where Sokuzan responds to questions about meditation practice like: Is there anything to practicing more than just showing up, or is there a way to practice more effectively? Does our practice change with a change in the concepts used? How can we look at what we need to see in a really harsh environment?
https://www.youtube.com/watch?v=TBULe2LS1_I&t=1s