li / shi / shang / you / xie / er / huang / di / wei / le / bao / zhu / huang / wei / bu / xi / xiang / wai / guo / cheng / chen

历史上有些儿皇帝为了保住皇位，不惜向外国称臣。

Some puppet emperors in history were willing to submit to foreign powers in order to keep their thrones.