[metrocartockasur]

I am not aware of other Zen traditions or Soto schools. The one with which I practice has as its bigger concern the realization of the Four Noble Truths through the development of Right View and sitting meditation as a mean of getting skills for a dispassionate mind. As far as I have been in practice with the sangha, it is very uncommon to talk about emptiness. The teishos are focused more around ethical issues and skillful means for zazen and shikantaza. It is also remarkable that we do not get entangled decoding the mysteries and ocult meanings of most of the Mahayana literature.