When Chou Yu heard about Chiang Kan's arrival,he was in his tent talking with his generals.Chou Yu suspected the purpose of Chiang Kan's visit and quickly devised a way to use Chiang Kan to trick Ts'ao Ts'ao.He left his tent with 100 servants and guards and went to greet Chiang Kan.They greeted each other,and then Chou Yu said to Chiang Kan with a smile,"You must be very tired since you have travelled such a long distance to cross the river.I think you must be an envoy for Ts'ao Ts'ao."