  Four exotic charmonium-like states, i.e. $X(4140)$, $X(4274)$, $X(4500)$, and
$X(4700)$, have been observed very recently by LHCb Collaboration in the decay
process $B^+\to J/\psi \phi K^+$ using the 3${\rm fb}^{-1}$ data of $p\bar p$
collision at $\sqrt s= 7$ and $8$ TeV. In this paper, we investigate
systematically the properties of hidden charm tetraquark states. The hidden
charm tetraquarks form an octet configuration and a singlet configuration
according to flavor $SU(3)$ symmetry. Based on a diquark-antidiquark model, the
hidden charm tetraquarks spectra are given. The previous XYZ exotic states
altogether with the newly ones $X(4140)$, $X(4274)$, $X(4500)$, and $X(4700)$,
can be well classified into certain representations. The spin-parities and
masses of the XYZ are predicted, most of which are in agreement with the data.
We particularly find that $Z_c(4430)$ may be treated as the first radial
excitation of $Z_c(3900)$, while the $Y(1^{--})$ states can be obtained by the
first orbital excitation of the $X/Z$ states. Besides, we calculate the decay
widths of the hidden charm tetraquarks into two charmed mesons. This work gives
a general tetraquark description for the XYZ states, which is helpful to
uncover their inner structures.
