Pang Tong had said to his master； 〃You have need to be on your guard against those two if they e to bid you farewell。 If they do not e； then the Pass must be attacked without delay。〃
Just as he said this； a violent gust of wind overthrew the leading flag of the army； and Liu Bei asked what this portended。
〃That means a surprise。 Those two intend to assassinate you； so be on your guard。〃
Accordingly； Liu Bei put on double armor and girded on his sword in readiness。 When the two generals arrived； the army halted while the generals should pay the farewell visit。
Then Pang Tong said to his two generals； Wei Yan and Huang Zhong； 〃However many soldiers e down from the Pass； see to it that none return。〃
The two generals of West River Land； Yang Huai and Gao Pei； armed with hidden daggers； came up； their escort bearing gifts of sheep and wine。 They marked no precautions being taken against an attack and began to think their task of murder would be an easy one。 They were led in to where Liu Bei sat under a tent； his adviser with him。
They said； 〃We hear； O Imperial Uncle； that you contemplate a long march； and therefore we e to offer a few poor gifts to speed you on your way。〃
The cups of farewell were duly filled。
Then Liu Bei replied； 〃You have a heavy responsibility to defend the Pass； Generals。 I pray you drink first。〃
They drank。 Then Liu Bei said； 〃I have a secret matter to talk over with you。〃
So all the two hundred soldiers of the escort were sent away and led to the midst of the camp。
As soon as they had gone； Liu Bei shouted； 〃My generals； lay hands upon these two rebels！〃
Thereupon Liu Feng and Guan Ping rushed out from behind the tent。 The two generals of the Pass were taken aback； bu