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Using the 1.31 × 1010 J/ψ events and the data above open charm collected at BESIII detector, we studied and observed a lot of exotics, including X(3872), X(3823), Y(2175), Y(4140), Zc(3900), Zc(4020), and so on. Some of them are confirmed, some of them are observed for the first time, and some of them are searched, but with no obvious signal.