When Liu Bang was young, he loved to take friends to his sister-in-law's house for dinner. Once he ate for a long time and didn't want to leave. His sister-in-law scraped the rice cooker badly when eating a big meal. When others heard the voice, they were well-advised to leave. Liu bang has always kept it in mind that he has lost face. Later, when he became emperor, he made princes for other relatives, but he had nothing for his sister-in-law's children. Liu bang's father advised him to seal one, and Liu bang sealed it. No food?