Zhang Xiao in our class is recognized as a genius in the class. He is of medium height and slightly fat. His face has a pair of bright eyes, full of wisdom. How can he be recognized as a young artist? Please listen to me slowly.

Zhang Xiao has a lot of knowledge in reading. He is a "confused person" in his class. He can explain to us all the problems I don't understand in my study and daily life. Sometimes in order to make me understand a problem, I often quote classics until I understand it. In the classroom, when facing the teacher's questions, it is more responsive. Even the teacher praised him as a young artist.

At ordinary times, students' stationery was broken, split in two, and soon recovered. Once, the lock of my bike was broken and I couldn't open it. Zhang Xiao came to have a look and found an old pencil and a small bottle. Drop the liquid in the small bottle on the key first, and then wipe it with toilet paper. Then I scraped some pencil scraps into the keyhole, picked up the key, inserted it, pulled it out, inserted it again ... and repeated it several times. Then he smiled and said to me, "All right!" I tried it and it was very convenient.

Look, is Zhang Xiao an able person in our class?