Cai Zhong 蔡中

In Chapter 34 of the Romance, Cai Mao, consulting Kuai Yue about doing away with Liu Bei, who had come to Xiangyang, said that he had his younger brother Cai He guard the main road to Mount Xian at the east gate, Cai Zhong the area outside the south gate and Cai Xun the area outside the north gate, and that the west gate needed no guard because the Tan Stream blocked the way in front of it. Romance, Ch. 34 §35–36

In Chapter 46, when Cao Cao was fuming over the arrows he had lost, Xun You proposed that, although Cai Mao had been put to death, the whole Cai clan was in the army and Cai Mao's younger kinsmen Cai Zhong and Cai He were serving as lieutenants, so they should be made to surrender falsely to Eastern Wu. Cao Cao summoned the two at night and charged them to report secretly if there was any movement, and the two said that since their wives and children were all in Jing Province they would not harbor divided loyalties, and that they would cut off the heads of Zhou Yu and Zhuge Liang and present them. The next day the two set out for the southern bank with 500 soldiers and a few boats. Romance, Ch. 46 §29–31

Before Zhou Yu the two called themselves Cai Mao's younger brothers, and weeping and bowing, said that since their elder brother had been killed by Cao Cao though guiltless, they had come to surrender in order to avenge him, and asked to serve in the vanguard. Zhou Yu rewarded them generously and made them the vanguard together with Gan Ning, but he told Gan Ning that since the two had not brought their families they were spies sent by Cao Cao, that he should treat them courteously while keeping watch on them inwardly, and that on the day of the campaign he would first kill the two to consecrate the banners. When Lu Su said the surrender must be false, Zhou Yu rebuked him, and Zhuge Liang explained to Lu Su that Zhou Yu meant to turn the stratagem back on its authors. Romance, Ch. 46 §32–35

In Chapter 47 Kan Ze went to Gan Ning's camp to observe Cai Zhong and Cai He. When Gan Ning fumed that he had been humiliated by Zhou Yu and Kan Ze whispered in his ear, the two sounded them out by asking what was troubling them, and Cai He asked whether they meant to betray Wu and go over to Cao Cao. When Gan Ning drew his sword, saying their secret had been discovered, Cai He confessed that they had been sent by Lord Cao to surrender falsely, and the two Cais said they had already informed the Chancellor of the humiliations suffered by Huang Gai and Gan Ning. Romance, Ch. 47 §15–18

In Chapter 49 Gan Ning and Kan Ze kept Cai He and Cai Zhong cajoled and detained inside the naval camp, drinking with them every day and not letting a single soldier go ashore. Zhou Yu told Gan Ning to take Cai Zhong and the surrendered troops along the southern bank flying the northern army's banners and take Wulin, where Cao Cao stored his provisions, while Cai He alone was kept below the command tent, and at dusk was beheaded and his blood used to consecrate the banners. Romance, Ch. 49 §14 · 25 · 43–44

In Chapter 50 Gan Ning had Cai Zhong guide him deep into Cao Cao's camp, then with a single stroke of his blade cut him down from his horse and set fire to the piles of grass. Romance, Ch. 50 §6