It took hundreds of strong men to roll the trebuchets up to the ramps in front of Yenking. With fresh snow falling on the plain, Genghis stood in frustration as the Chin engineers wound back seven great bows, sending iron-tipped poles crashing against the ramparts. The trebuchets answered with two boulders that cracked against the walls, sending splinters flying. The Chin weapons were untouched.

It took an age to reset Lian's great levers. In that time, the wall bows hammered the ramps over and over. Before the trebuchets were ready for a second shot at the city, cracks appeared in the ramps the tribes had built. After that, destruction came quickly. Stones exploded into the air with each strike, showering Lian and his men with splinters. Many of them fell clutching at their hands and faces, staggering back as the barrage continued. Lian himself was untouched and he stood watching in grim silence as his ramparts were torn apart and his machines exposed.

For a time, it seemed that the trebuchets themselves might survive, but then a direct hit cracked across the plain, followed almost instantly by three more. As the wall teams tired, the rate had slowed, but each blow carried terrific force. Warriors died trying to drag the machines out of range. One moment they were there, sweating and shouting. The next they were bloody smears on the wood and the air around them was filled with snow and dust.

Nothing could be salvaged. Genghis growled softly in his throat as he looked over the broken men and timbers. He was close enough to the city to hear cheering inside, and it galled him that Lian had been right. Without protection, they could not match the range of the wall weapons, and whatever they built would be hammered down. Genghis had discussed making high towers to wheel toward the city, perhaps even sheathed in iron, but the heavy bolts would punch straight through them, just as his own arrows pierced sheet armor. If his metalworkers made the towers strong enough to withstand the blows, they would be too heavy to move. It was maddening.

Genghis paced up and down as Tsubodai sent brave warriors in to collect the wounded and take them out of range. His men believed he could take Yenking as he had taken other cities. Seeing Lian's extraordinary constructions smashed to kindling would not help morale in the camp.

As Genghis watched the Young Wolves risk their lives, Kachiun approached and dismounted. His brother's expression was inscrutable, though Genghis thought he could detect the same deep irritation at the failure.

"Whoever built this city gave thought to its defense," Kachiun said. "We won't take it by force."

"Then they will starve," Genghis snapped. "I have raised the black tent before Yenking. There will be no mercy."

Kachiun nodded, watching his older brother closely. Genghis was never at his best when forced into inaction. Those were the times when the generals walked with care around him. Over the previous days, Kachiun had seen Genghis lose his dark moods as the ramps rose, wondrously strong. They had all been confident, but it was clear now that the Chin commander had only waited for them to drag the new weapons into range. Whoever he was, the man was patient, and patient enemies were the most dangerous.

Kachiun knew Genghis was capable of being stung into rash decisions. As things stood, he still listened to his generals, but as the winter wore on, Genghis would be tempted to try almost anything and the tribes could suffer as a result.

"What do you think of sending men to climb the walls at night?" Genghis asked, echoing Kachiun's thoughts. "Fifty or a hundred of them, to light fires in the city."

"The walls can be climbed," Kachiun replied carefully. "But the Chin patrols at the top are as thick as flies. You said it would be a waste of men, before."

Genghis shrugged irritably. "We had catapults then. It might still be worth trying."

Genghis turned his pale eyes on his brother. Kachiun held his gaze, knowing his brother would want the truth.

"Lian said they had more than a million in the city," Kachiun said. "Whoever we sent would be hunted down like wild dogs and become sport for their soldiers." Genghis grunted in response, grim and despairing. Kachiun searched for a way to lighten his mood.

"Perhaps it is now time to send the generals out to raid, as you said you would. There will be no quick victory here and there are other cities in this land. Let your sons go with them, that they can learn our trade."

Kachiun saw doubt cross his brother's face and thought he understood. The generals were men Genghis trusted to act without his supervision. They were loyal by any test that mattered, but the war up to that point had been fought with Genghis watching. To send them out, perhaps for thousands of miles, was not an order Genghis would give lightly. He had agreed to it more than once, and yet somehow, the final command had not come.

"Is it betrayal you fear, brother?" Kachiun asked softly. "Where would it come? From Arslan and his son Jelme, who have been with us from the beginning? From Khasar, or Tsubodai, who worships you? From me?"

Genghis smiled tightly at the idea. He looked up at the walls of Yenking, still untouched before him. With a sigh, he realized he could not keep so many active men on that plain for as long as three years. They would be at each other's throats long before that, doing the work of the Chin emperor for him.

"Shall I send the entire army? Perhaps I will stay here on my own and dare the Chin to come out."

Kachiun chuckled at the image. "In truth, they would probably think it was a trap and leave you there," he replied. "Yet if I were the emperor, I would be training every able man as a warrior, building an army from within. You cannot leave too few to guard Yenking, or they could see a chance to attack."

Genghis snorted. "You do not make a warrior in a few months. Let them train, these bakers and merchants. I would welcome the chance to show them what it means to be a warrior born."

"With a voice of thunder, no doubt, and perhaps a penis of lightning," Kachiun said with a straight face. After a moment of silence, both of them broke into laughter.

Genghis had lost the black mood that had settled on him with the destruction of the catapults. Kachiun could almost see the energy rise in him as he thought about the future.

"I have said I will send them out, Kachiun, though it is early yet. We do not know if other cities will try to relieve Yenking and we may need every man here." He shrugged. "If the city hasn't fallen by spring, I will set the generals free to hunt."

Zhi Zhong was in a pensive mood as he stood before the high window in the audience chamber of the summer palace. He had hardly spoken to the boy emperor since the day he had crowned him. Xuan was somewhere in the labyrinth of corridors and rooms that had formed his father's official residence, and Zhi Zhong rarely thought of him.

The soldiers had cheered their general as the Mongol trebuchets were destroyed that morning. They had looked to Zhi Zhong for approval and he had shown it in a brief nod to their officer before striding down the steps into the city. Only in private had he clenched a fist in silent triumph. It was not enough to expunge the memory of the Badger's Mouth, but it was a victory of sorts and the frightened citizens needed something to raise them from their despair. Zhi Zhong sneered to himself as he recalled the reports of suicides. Four highborn daughters had been found dead in their rooms as soon as the news of the army's defeat had filtered through Yenking. All four had known each other and it seemed they preferred a dignified end to the rape and destruction they saw as inevitable. Eleven more had taken the same path in the weeks that followed, and Zhi Zhong had worried the new fashion for death might spread right across the city. He clasped his hands behind his back, peering out across the lake at the noble houses. They would have better news today. Perhaps they would hesitate with their knives of ivory and their scorn for his skill. Yenking could still resist the invaders.