Fig. 1. (a) Saddle shaped metallic structure and effective split ring resonator model; (b) Band structure of ideal Weyl metamaterial: four Weyl nodes located at the same frequency

Fig. 2. Reflection electromagnetic field of Weyl metamaterial. (a) TE mode incident; (b) TM mode incident. The background color indicates the S₃

Fig. 3. (a) Polar vector and axial vector; (b) Illustration of a set of basis

Fig. 4. Reflection eigen electromagnetic fields of Weyl metamaterial are linear polarized

Fig. 5. (a) Linear reflection eigenmode when circling one Weyl node; (b) Quadratic Möbius strip; (c) Rotation angle \begin{document}$ \mathrm{\theta } $\end{document} of the linear reflection eigenstate