Where foreigners carry on an intrigue with foreigners, or local men with local men, there the consequences of the intrigue, unanimously carried on with a set purpose, will be very serious. When guilt is got rid of, there will be no guilty persons; but when a guilty person is got rid of, the guilt will contaminate others. Hence, when foreigners carry on an intrigue, the king should employ the policy of dissension and coercion. Spies under the guise of friends may inform foreign conspirators: "Mind, this your king, with the desire of enriching himself, is naturally provoked against you all." Then fiery spies may mix with the servants and soldiers of the abettor (of foreign conspirators) and kill them with weapons, poison, and other means. Other spies may then expose or betray the abettor.