The content of that letter was very direct In plain terms it was just two points . The first was congratulations It said, congratulations on finally returning home and becoming ruler of Zheng . The second went straight to the real issue . It reminded him that back when he was living under another man’s roof in Song, it was Duke Zhuang of Song who sent troops to help him . At that time he had personally promised to give Song three walled cities, one hundred pairs of fine white jade, ten thousand yi of gold, and every year thirty thousand zhong of grain . Now that he was sitting on the throne, it was time to make good on his word .
