King Zhaoxiang of Qin
Reigning over 55 years, he was one of the longest-serving rulers during the Eastern Zhou Dynasty. Although making numerous policy mistakes during his later years, his aggressive territorial expansions were pivotal in consolidating the state of Qin as the dominant military powerhouse in the late Warring States period. It was the strategic dominance established during his reign that paved the way to Qin's eventual successful unification of China under his great-grandson, Ying Zheng.
Lord Mengchang
In 299 BC, Lord Mengchang was sent to Qin on an official journey. King Zhaoxiang had heard so much about the young lord that he wanted to appoint him as the new Chancellor of Qin. However, King Zhaoxiang was warned by his ministers that Lord Mengchang was still loyal to his homeland of Qi, and soon put Lord Mengchang under house arrest. Desperate, Lord Mengchang sent a messenger to the king of Qin's beloved concubine for help. In exchange for her aid, the woman asked for the snow fox fur coat which Lord Mengchang had already given to the king as a gift when he first arrived in Qin. It was worth a thousand pieces of gold and there was not its like anywhere. King Zhaoxiang kept it in the royal treasury. One of Lord Mengchang's entourage in Qin was a skilled thief. He disguised himself as a dog and sneaked into the treasury under cover of darkness and retrieved the coat. Within two days, Lord Mengchang was released thanks to the pleas of the concubine. Lord Mengchang hired a chariot, forged his documents and dashed to the borders. By midnight of the next day, he had reached Hangu Pass—the last checkpoint of Qin before entering the territories of Qi. King Zhaoxiang had immediately regretted letting Lord Mengchang go and a small army was chasing him to bring him back. The guards at Hangu Pass would not let anyone pass through until the cock-crow at dawn. Lord Mengchang turned to his entourage for help. One of his aides could imitate all types of sounds. He crowed like a rooster, and this woke up the rest of the roosters. Not knowing that Lord Mengchang was being hunted, the guards at the pass then allowed Lord Mengchang and his entourage to enter Qi territory to safety.