The terahertz (THz) regime is the frequency window to be fully explored in astronomy.Dome A in Antarctic, with an altitude of 4093 m and temperature below-80 Celsius degree in winter, is regarded as the best site on earth for astronomical observations in this frequency regime.Currently, China is proposing to build an observatory there, in which Dome A 5m Terahertz Telescope (DATE5) is one of two major telescopes.This talk will present the development of next generation instrument for DATE5, namely terahertz superconducting imaging array (TeSIA).