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We study the interactions of the system in the framework of chiral effective theory. We consider the contact, one-pion and two-pion exchange interactions and bridge the low energy constants of the system to those of the systems through the quark-level ansatz for the contact interaction. We explore the influence of intermediate channels in the two-pion exchange diagrams of the system. We obtain a deep bound state and a shallow bound state . As a byproduct, we further investigate the interactions of the and systems.