Heavy exotic molecules

We briefly review the formation of pion-mediated heavy-light exotic molecules with both charm and bottom, under the general structures of chiral and heavy quark symmetries. The charm isosinglet exotic molecules with J(PC) = 1(++) binds, which we identify as the reported neutral X(3872). The bottom isotriplet exotic with J(PC) = 1(+-)binds, and is identified as a mixed state of the reported charged exotics Z(b)(+) (10610) and Z(b)(+) (10650). The bound bottom isosinglet molecule with J(PC) = 1(++) is a possible neutral X-b(10532) to be observed.