Years Ago, Ying Zheng, King of Qin Kingdom, sent his armies to perish Chu, the last one of his six enemy kingdoms that stopped him from uniting China. Xiang Family, the strongest power in Chu confronted Qin's troops. Xiang's young master, Shoyu, despite his young age, fought excellently. However, because of the fierce battle machines that Gongshu Family had made for Qin, Shaoyu and Chu armies were unalbe to withstand the attack of Qin troops led by Meng Tian, and were forced to retreat. Ying Zheng finally unified China, but he knew there were still enemies watching his empire. Days ago, he sent his troops and Directionist Wei Zhuang to destroy the Machine City of Mohist School.

Years ago, the remaining Chu soldiers were caught up by Qin's troops. Shaoyu fought against Meng Tian but he was too young to win. Meng Tian told Shaoyu that he had killed Xiang Yan, Shaoyu's grandfather. When Chu's army was about to be surrounded, three Manchine White Tigers attacked Qin's troops. Gao Jianli, Xuenu, Datiechui and Daozhi came to help Shaoyu out. Hours Ago, Daozhi was trying to meet the Mohist leader to warn him about the situation in the City when he was attacked by Shaosiming(Junior Charge of Life) from Yin-yang School. The Mohist Leader and his allies were heading towards the City when they found a Mohist deciple lying on the ground. The Leader helped him up while the diciple was actually Dasiming(Senior Charge of Life) from Yin-yang School. The Leader and his friends defeated the Qin's soldiers around and Daozhi managed to meet with the Leader.

Ge Nie was stabbed from the back by Heiqilin(Black Kylin) disguising as Tianming. Though he's wounded he insists on fighting Wei Zhuang. Ge Nie and Wei Zhuang are the two students of Guigu(Ghost Valley), the Directionist School, the most mysterious school, the winner between whose two heirs has the abilities to direct the fate of every kindom under heaven. Twelve years ago, they were put into a test in which each of them was required to somehow stop two tigers running in opposite directions and save the two men tied up at the two ends of a hallway. Wei Zhuang killed the two tigers and saved one man while the other died. Yet Ge Nie managed to save neither because he tried to save both. Master Guigu told him that he would lose again if he failed to get over his kindness and become decisive.

The delayed life-and-death battle between Wei Zhuang and Ge Nie finally begins. Ge Nie uses his highest technique, the Hundred-Step Flying Sword but fails to even injure Wei Zhuang. Surprisingly, Wei Zhuang also attacks with Flying Sword that should have only belonged to Ge Nie. Ge Nie manages to wound Wei Zhuang but Wei Zhuang breaks Rainbow Abyss with the teeth of Shark Tooth. However, Ge Nie grabs the broken blade and gets Wei Zhuang under control. Wei Zhuang asks Ge Nie to kill him, but Ge Nie recalls their brotherhood and hesitates when Wei Zhuang attacks him. Ge Nie is badly wounded and falls.

Two months ago, Tianming was very hostile to Ge Nie because he thought it was Ge Nie's fought that he was chased by killers. After Ge Nie's betrayl, Ying Zheng and his minister Li Si decided to unleash a fearful prisoner named Shengqi to kill Ge Nie. Shengqi attacked Ge Nie and Tianming. Their carriage was stuck between cliffs and about to fall, but Tianming did not trust Ge Nie and refused to get out. Shengqi chopped the carriage into pieces, Ge Nie held Tianming in his arms and jumped off the cliff. After landing safely, he protected Tianming from the falling carriage with his body and got hurt. Tianming realized he was wrong and begged for Ge Nie's forgiveness in tears. Ge Nie was deeply comforted with Tianming's trust.

Ge Nie killed a number of assasins. Tianming was fascinated by his power and wished to learn from him to kill the assasins. Ge Nie told Tianming that one should never try to become powerful just to kill the others. He wrote the character "Chivalrous" (侠 xia）. He told Tianming the left part was a character "man" which meant the behavior of a man; the right was a big man carrying two small, so this character meant "the strong helping the weak". In the Machine City, Ge Nie wakes up and tells Tianming to be strong. Tianming cries grievedly, saying he can't lose his Uncle. Ge Nie thanks Tianming for his trust and understanding before he goes unconscious again. Tianming is furious with Wei Zhuang and the Mohists. Gao Jianli apologizes for misunderstanding Ge Nie before, and vows to protect Tianming and Ge Nie. Wei Zhuang catches Tianming and arranges three one-on-one battles. Only if the Mohists can win two of the three will Tianming be saved.

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