TITLE: GCN CIRCULAR NUMBER: 23623 SUBJECT: GRB 190106A: Xinglong-2.16m spectroscopy DATE: 19/01/06 17:23:09 GMT FROM: Dong Xu at NAOC/CAS Z.P. Zhu, D. Xu, Y. Wang, J.B. Zhang (NAOC), J.H. Liu, X. Zhang (XAO) report: We observed the optical afterglow of GRB 190106A (Sonbas et al., GCN 23615) using the Xinglong-2.16m telescope equipped with BFOSC. We acquired 1x3600 s and then 1x2400 s spectra starting at 14:02:39 UT on 2019-01-06, i.e., 27.9 mins after the burst. The optical afterglow was R~16 mag at this time. From preliminary analysis, a continuum is detected across the spectral range of 3600 - 9000 AA. A few absorption features are also detected due to Fe II, Al II, Mn II, Mg II doublet, and Mg I, at a redshift of z~0.896, which we propose as the likely redshift of the GRB.