Deng Ai called his son Deng Zhong and Shi Zuan and sent them with ten thousand troops each to attack the left camp； one on each flank。 Then he sent Zheng Lun and five hundred troops into the underground road； which opened in rear of the camp of Wang Han and Jiang Bin。
As the newly made camp was not yet well fortified； Wang Han and Jiang Bin exercised great care and kept their troops under arms all night； watching with vigilance。 So when the alarm was given； they had but to seize their weapons and go out。 But as the two leaders were mounting their steeds； Deng Zhong and Shi Zuan had attacked from without； and Zheng Lun from within。 Thus attacked from three sides； soon Wang Han and Jiang Bin found the position untenable and fled。
When Jiang Wei saw that his left camp had been attacked on three sides； he mounted and took his position in front of the center camp。
〃Let no one move on pain of death！〃 he shouted。 〃Stand still。 When the enemy approaches； shoot！〃
The right camp was ordered to stand fast。 His defense was effective。 A dozen of times the troops of Wei came forward； only to be driven back before the arrows and bolts of the defenders。 Daylight found the Shu camps still firm； and the Wei troops drew off。
〃Jiang Wei has indeed learned of Zhuge Liang；〃 said Deng Ai。 〃His soldiers stood the night attack without flinching； and the leaders took the chances of battle quite calmly。 He is able。〃
Next day； when Wang Han and Jiang Bin went to confess their fault； Jiang Wei said； 〃It was less your fault than mine； for I did not clearly recognize the nature of the terrain。〃
So no penalty was inflicted。 The camp was made stronger； and the subterranean passage was filled with the bodies of the slain。
A challenge to battle for