Guo Bo's greatest pain was that he had no freedom because his life was always under his father's control. All this time he was in the Land Bureau, it was because his father forced him to crawl into the world of politics.
If Guo Bo hadn't made any progress all this time, hadn't been promoted and hadn't told Elder Guo that he really didn't have any thoughts in the political world, his father would never have let him go. This gave Guo Bo a chance to run to America. But if Elder Guo knew that he had gone to America because of Wei Zhijuan, he'd be pissed off.
Everyone in the Guo Family knew that Guo Wuying's hands were injured because of Wei Zhijuan. Although she did not kill her, people from the Guo Family believed that Guo Wuying suffered because of her.
Therefore, the biggest problem that existed between Guo Bo and Wei Zhijuan was quite a lot. Otherwise, he would have come to America long ago. How could he delay it for so long and let Xian Yijun take the lead?