Dear editor,rnMetasurfaces have been proposed and investigated in the past years owing to their unique advantages in controlling electromagnetic(EM)waves.By adjusting the phase and amplitude of EM waves,we can achieve the desired func-tions based on metasurfaces[1].In 2014,the digital coding metasurfaces were proposed by Cui et al.[2].In such a method,the phase response of metasurface is characterized by digital bits[3].To satisfy the requirements of the high data rate and adaptive communication with beamforming ability,higher operation frequencies with large bandwidth are used as wireless communication frequencies,especially in millimeter-waves(mmW)and Terahertz(THz)regions[4,5].However,affected by processing and parasitic effects,it is hard to extend the performance to higher frequencies for the tunable devices with common semiconductor compo-nents adopted in the microwave band.Hence,researchers started to look for new phase-changing techniques based on the characteristics of different materials,such as liquid crys-tal,graphene,and VO2[6].In particular,it is found that the nematic liquid crystals(NLCs)have a unique response to EM waves in the THz frequency band with the merits of low loss,and facility of integration.