The vision for an advanced accelerator-driven neutron source in China started in the late 1990s, followed by the China Spallation Neutron Source (CSNS) breaking ground in Dongguang in 2011 and obtaining its first neutrons on August 28, 2017. We report our work on one of the three day-one instruments, the Small-Angle Neutron Spectrometer (SANS) at CSNS (SANS@ CSNS). The latest and preliminary hot-commissioning results are encouraging, and we are beginning to explore scientific opportunities as well as cultivate the user community. Introduction The SANS@CSNS is the first pulsed-source, generalpurpose, time-of-flight SANS instrument in China. It utilizes beam port #1 of the CSNS target station facing a coupled liquid hydrogen moderator and adopts a short straight beamline configuration with the classic pointfocusing pin-hole camera geometry. Compared with the curved neutron guide configuration, this design can obtain a better neutron transmission at short wavelength [1] and enable a wide Q range during experimental measurements. The first neutrons were observed in on August 28, The time-of-flight Small-Angle Neutron Spectrometer at China Spallation Neutron Source