Optical and mid-infrared light curves of J1011+5442. The dot-dashed red, green, cyan, and purple lines represent the spectroscopic observational time by SDSS, the Xinglong 2.16 m, the Lijiang 2.4 m telescope, and the MMT 6.5 m telescope. The straight blue line represents the spectroscopic observational time in the faint state by SDSS. The dotted black line represents the observational time by Chandra. The mid-infrared light curve is rebinned within half a year.