《太平广记·卷四百九十一·杂传记》
娼妓是以美色侍候人的，对她们无利的事就不会跟人一心，可是杨娼却能以死报答主将，这是义；退回主将的财物，这是廉。
夫娼以色事人者也，非其利则不合矣。而杨能报帅以死，义也；却帅之赂，廉也。
Prostitutes serve people with their beauty. They will not treat someone with one heart if it doesn't benefit them. However, Yang Chang could return the money that the general gave her with her life, which shows her loyalty.