Commanders of the veteran CCF 42nd Army 124th Div, prepare to attack X Corps in east Lin-Chiang Hyesanjin area, late October 1950
The CCF 124th division was the only major Chinese force to meet defeat in their First Phase Campaign. The 124th did roll back a ROK regiment, but then ran into the 7th Marines of 1stMarDiv. They took a terrible beating, which led to the CCF leaders deciding to destroy all of 1stMarDiv as a keystone of their next, or Second Phase, Campaign.
They didn't succeed with that plan, either.