GRB 180618A: Xinglong-2.16m optical upper limit

We observed the field of GRB 180618A (LaPorte et al., GCN 22790) using the 2.16-m telescope located at Xinglong, Hebei, China, equipped with the BFOSC camera. We obtained 6x600s R-band frames, starting at 12:43:22 UT on 2018-06-19, i.e., 1.50 days after the BAT trigger. The previously detected optical afterglow of the GRB (e.g., LaPorte et al., GCN 22790; Guidorzi et al., GCN 22792; Tyurina et al., GCN 22797) was not present in our stacked image, down to a limiting magnitude of R~21.4 mag, calibrated with the SDSS field.