An appendix titled "Huanglong's Three Checkpoints" (黄龍三關) written by Wuliang Zongshou (無量宗壽) in the late spring of 1230 C.E. Huanglong Huinan (J.
A short untitled addendum by Wuan written on the republishing of the work in the summer of 1245 C.E. Wuan called his brief addition the 49th case.