Gluonic tetracharm configuration of X(6900)

Recently, a new hadronic structure at around $6.9$ GeV was observed in an LHCb experiment. From its limited yet known decay mode, one could still determine that it contains least four charm quarks and hence belongs to the category of exotic state. This finding indicates for first time tetracharm states is therefore quite importance. In this letter, we propose nature hybrid interpretation $X(6900)$, i.e. $[\bar{3}_c]_{c c}\otimes[8_c]_{G}\otimes[3_c]_{\bar{c} \bar{c}}$ configuration with $J^{PC}=0^{++}$, by using QCD Sum Rule technique performed mass spectrum calculation. The results showed $X(6900)$ be gluonic state, some other structures may exist, e.g., $7.2$ $J^{PC}=0^{-+}$. We also predict tetrabottom states, leaving future