C63 Broken Hand and Foot
If Hong Lin was really crippled, then when Hong Shan came to find him, he wouldn't be too passive and would have done everything that he could.
"Junior Brother Xiao, please let me go this time. If I see you again, I will walk with you. As long as you don't cripple my cultivation, I will agree to anything you say!"
If he didn't know what Hong Lin did in the past, just from this scene alone