Lomb-Scargle periodogram for binary detection mode following the code from Braga et al. (2025), applied to the NRT data set combined with all historical data from Braga et al. (2025) and Wang et al. (2025). The first candidate of the periodogram is a periodicity of 158.1(3) days, indicated by the vertical dashed line. The dotted horizontal lines correspond to the 1σ, 3σ, and 5σ significance levels determined by conducting 10000 bootstrap resamplings.