 
 <prompt> ```Li Siyi, one student from Jinan Foreign Language School, don start new habit. She no dey believe everything wey she read. "Not everything wey dey for books na true," she talk. Many other students for her school dey reason the same thing like Li. Dem learn dis one after dem see mistake for their Chinese textbook. Dem learn one Tang poem, Ci Beigu Shanxia, last year. Inside the book, dem see picture wey show boat wey dey sail for river. "But according to the famous line from the poem, feng zheng yifan xuan, the sail no suppose spread," Zhang Jiayi, wey be Li classmate talk. To get the correct answer, the students ask their Chinese teacher, Liu Yan. Liu and the students search for books, check for internet and make sure say People's Education Press really make mistake about the picture. The students write letter give them about the mistake. "I think my students do the right thing but I no expect say dem go reply," Liu talk. "I see am as a way to show them the importance of questioning spirit." To their surprise, one month later, dem get reply from Gu Zhenbiao, the expert for Chinese textbooks for middle schools. Gu talk say sorry for the mistake and he also talk say he really think say the students dey very great. When Liu read the letter loud to all the students, everybody dey happy. "We dey very happy say we get our own ideas!" Li talk.

1. Wetin the students learn last year?

Provide a numbered list of answers.``` <response>: ```1. Nofin wey dey inside book na true``` 