Wiping his tears, Ma Chao wrote a reply which was returned by the bearer.
The Xiliang army was then mustered; horse and foot were assembled. Just before the day that had been fixed for the start, the Imperial Protector of Xizhou, Han Sui, sent for Ma Chao, to whom he showed a letter from Cao Cao promising the Lordship of Xiliang as a reward for sending Ma Chao a prisoner to the capital.
“Bind us both, Uncle, and send us thither; you need not move a single spear,” said the younger man prostrating himself.
But Han Sui raised him, saying, “Your father and I were sworn brothers; think you I would harm you? Rather will I help if you are going to fight.”
Ma Chao expressed his gratitude. The unhappy bearer of Cao Cao's letter was dragged forth and beheaded. This done, the two took count of their armies. Han Sui had eight divisions under eight commanders — Yang Qiu, Cheng Yin, Hou Xuan, Liang Xing, Cheng Yi, Li Kan, Ma Wan, and Zhang Heng — all to be relied upon to follow Han Sui. Ma Chao had two leaders, Pang De and Ma Dai. The total force was two hundred thousand troops with which the commanders march to Changan.
The Governor of that city was Zhong Yao. As soon as he heard what was afoot, he sent a fleet messenger to Cao Cao and prepared for defense. He led his force out into the open plain and arrayed it for battle.
Ma Dai, with fifteen thousand, came on first, pouring over the countryside like a flood. Zhong Yao would parley with him, but Ma Dai came forward, sword in hand, to attack. However, the defender did not take the challenge but turned and fled. Ma Dai followed in pursuit. Soon the main body of the invaders arrived, and they surrounded the city, which Zhong Yao set about defending.
Changan had been the capital of the Western Hans and so was well fortified with a solid wall and a deep moat, safe against the most terrific attacks. The new armies besieged the city for ten days without success. Then Pang De proposed a plan.
Said he, “Since the land about the city is barren and the water bitter, the people must have communication with the country around in order to live. Further they have no fuel. Ten days of siege must have exhausted the supplies in the city, wherefore if we relax for a time — well, you will see. We shall capture the city without moving a finger.”
“Your plan seems excellent,” said Ma Chao, when he heard what it was.
Thereupon they sent orders to each division to retire, and Ma Chao covered the retreat. Next day Zhong Yao went up on the walls to look around and saw that the besiegers had gone. However, suspecting a ruse, he sent out spies, who returned to say the soldiers had really moved away to a distance. Wherefore he felt much relieved and allowed both soldiers and people to go out into the country to cut the much needed firewood and bring in water. The city gates, thrown wide open, were thronged with those passing in and out.
This continued for five days, and then they heard that Ma Chao's army was returning. A panic ensued. The people rushed into the city, and the gates were once more barred.
The General of the west gate was Zhong Jin, brother of Zhong Yao. About the third watch of the night, a torch was seen moving just inside the gate; and when the General went to see what was wrong, and was passing the gateway, a man suddenly galloped up and slashed at him with a sword. At the same time the attacker shouted, “Here is Pang De!”