The Daya Bay experiment reported in March this year the discovery of non-zero neutrino mixing angle theta_13 from the disappearance of reactor neutrinos with a baseline of 1.7 km. An updated analysis confirmed this results and the statistical significance is improved to 7.2 sigma. All the 8 detector modules are now fully installed and operational, and future prospects of this experiment will be give. A new plan, called Daya Bay II, for the mass hierarchy measurement based on reactor neutrinos will be presented.
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