[Tu Yu says: "through conversion of the enemy's spies we learn the enemy's condition." And Chang Yu says: "We must tempt the converted spy into our service, because it is he that knows which of the local inhabitants are greedy of gain, and which of the officials are open to corruption."]
Endroit: ¶976 Licence: Public domain · Source Le texte est donné tel que dans l'édition, sans retouche.