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Using a sample of $(10087\pm44)\times 10^6$ $J/\psi$ events, which is aboutfifty times larger than that was previously analyzed, a further investigationon the $J/\psi \rightarrow \gamma 3(\pi^+\pi^-)$ decay is performed. Asignificant distortion at 1.84 GeV/$c^2$ in the line-shape of the$3(\pi^+\pi^-)$ invariant mass spectrum is observed for the first time, whichis analogous to the behavior of $X(1835)$ and could be resolved by twooverlapping resonant structures, $X(1840)$ and $X(1880)$. The new state$X(1880)$ is observed with a statistical significance of $14.7\sigma$. The massand width of $X(1880)$ are determined to be $1882.1\pm1.7\pm0.7$ MeV/$c^2$ and$30.7\pm5.5 \pm2.4$ MeV, respectively, which indicates the existence of a$p\bar{p}$ bound state.

Observation of the Anomalous Shape of $X(1840)$ in $J/\psi \rightarrow \gamma 3(\pi^+ \pi^-)$