和妈妈坐火车卧铺去北京

Uncle, Ji Feng hesitated for a moment, and finally nodded with a wry smile and said: But I have to explain first that I may not have much time. How much I can learn by then depends on Shaoyun's understanding. I definitely don’t have time to teach him step by step every day, and even if I teach him some things, he may not be able to learn them....