Fig. 1 (IMAGE) Science China Press Caption Experimental observation of ideal type-II Weyl points. (a) Circuit sample with periodic boundaries. (b)-(c) Band structures of the circuit with periodic boundaries. (d) Circuit sample with an open boundary. (e) Band structure of the circuit with an open boundary. (f) Field distribution of the surface state. Credit ©Science China Press Usage Restrictions Use with credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.