On 22-23 May , the annual CSNS open day was successfully held at the Dongguan Campus of IHEP. This two-day event saw more than 4,000 participatants from all over the country.

Invited talks given by IHEP scientists ranged from the neutron scattering technology, to the topics of synchrotron radiation technology, astrophysics and neutrinos.  Though these science talks were inspiring, the most attractive part must be an on-site visit to the accelerator tunnels, the target station and the instruments, because this is the once-in-a-year opportunity to go down the tunnels and explore this “big machine”.