We show that the coupled complex systems can evolve into a new kind of
self-organized critical state where each subsystem is not critical, however,
they cooperate to be critical. This criticality is different from the classical
BTW criticality where the single system itself evolves into a critical state.
We also find that the outflows can be accumulated in the coupled systems. This
will lead to the emergency of spatiotemporal intermittency in the critical
state
