Concentration–mass (c–M) relation. Light gray points represent the best-fitting concentration and mass for individual clusters, while black points show the weighted average values in each mass bin, with error bars indicating the standard deviation. For comparison, the results for strong-lensing selected halos from Meneghetti et al. (2014) are shown by a solid orange line. Weak-lensing-based results from Xu et al. (2021) (upturn model) are plotted as a dashed-dotted blue line, and the power-law model from Duffy et al. (2008) derived from DM-only numerical simulations, is plotted as a dashed red line, respectively.