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Masillo [1] commented on our manuscript [2] "Observation of a Fast Evolutionin a Parity-time-symmetric System", pointing out a contradiction of our workwith Ref.[3]. In this reply, we pointed out there is no disagreement betweenMasillo's comment and our work in Ref. [2]. The efficiency cost pointed out inRef.\cite{masillo} exists, namely to obtain the PT-symmetric hamiltonianevolution, one has to make a measurement on the auxiliary qubit and theauxiliary qubit is at state $|0\ket$ only probabilistically. This is reflectedin the amplitude of the spectrum in the NMR quantum simulation. As a result, wemade a small modification in a new version of the Ref. [2], and Fig. 2 ofRef.[2] has been replaced by spectra of two different $\alpha$'s in order toillustrate this fact.

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