To improve Chinese performance, it is right to read as a document, but it is not enough to read only as a document. The composition book is not very attractive, and people who don't like reading can't read it. I advise you to let your brother dabble in extracurricular books widely, and he can read them as long as he likes. In addition, you talk to him about the topic he is most interested in every day, and then ask him to keep a diary. Be careful, don't ask him, tell him, and write from the heart, no matter how long or short, a word will do. Before going to bed every day, I read an article I like. In this way, after reading for a long time, you can write an article if you have something to say in your heart. Attached below is a bibliography of extracurricular reading issued by the Ministry of Education for your reference.

Recommended bibliography for extracurricular reading in primary schools

First period (Grade 1-2)

Three-character Classics, Hundred Family Names, Ancient Poetry Reading Manual, Adventures of Little Butou, Adventures of Little Tiger, Three Little Pets (Moonlight Island Series), 365 Nights of Knowledge Fairy Tales, etc. San Mao's Wandering Tales, 1 Chinese Ballads, 3 Fable Stories, 3 Folk Stories, Avanti's Stories, Little Foot Picture Book Series, Grandpa's Thinking, The Story of Fox Lena, The Adventures of Onion, The Amir of Naughty Bag, and The Adventures of the Lie Country. Including Cinderella, Little Red Riding Hood, Snow White, Twelve Hunters, Tailor and Shoemaker, Sleeping Beauty, Little Deer Brother, Three Languages, Silver Stars, Three Brothers Looking for Happiness, Three Birds, Three Treasures, Brave Prince, Singing Bones, Children of the Virgin, Golden Bird, etc. Including Ugly Duckling, Wild Swan, princess and the pea, Thumbelina, The Emperor's New Clothes, Lightbox, Big Klaus and Little Klaus, Naughty Children, Two Travellers, Lucky overshoes, Firm Tin Soldiers, Nightingale, Red Dancing Shoes, Daughter of the Sea, Flying Box and Snow Queen.

the second learning period (grade 3-4)

Thousand Characters, Poems of a Thousand Schools, Disciples' Rules, Reading Manual of Ancient Poems, Dalin and Kobayashi, For Young Readers, Fairy Tales of Yan Wenjing, Fairy Tales of Popular Science in Gao Shiqi, Fairy Tales of Ye Shengtao and Children's Ancient Literature Series. Tales of Chinese and Foreign Celebrities, New Edition of PHS Roaming in the Future, 3 Idiom Stories, 3 Inventions and Discoveries Stories, 3 Puzzle Stories, New Stories of Eastern Zhou Countries, The Journey to the West, Five Thousand Years Up and Down in China, Doraemon Handmade Series, Stories of Chinese and Foreign Scientists, 1, New Why Stories, and The Story of Chinese and Foreign Scientists. When the world was young, Education of Love, Adventures of the Boatman, Bambi the Deer, Little Thinker in Action, The Magician's Hat, The Story of the Jungle, Pinocchio, The Story of Pippi Longstocking, The Arabian Nights (6 articles, including The Arabian Nights)

the third period (grade 5-6)

The Analects of Confucius, Reading Manual of Ancient Poems, Songs of a Small Stream (up and down), Series of Contemporary Chinese Juvenile Novels, Collected Works of Qin Wenjun, Diary of a Girl, Invisible Man, Time Machine, Good Soldier and Handsome, etc. Mathematics in Life, Outlaws of the Marsh (Children's Edition), Romance of the Three Kingdoms (Children's Edition), Liaozhai (Children's Edition), Encyclopedia for Children, The Little Prince, Greek Myth, The Prince and the Poor Child, The Wandering of the Poor Child, A Goose Riding Journey, Tom? Adventures of Sawyer, If Give Me Three Days of Light, Around the World in Eighty Days, Heidi, Being a Happy Young Man, Musician, Robinson Crusoe, Gulliver's Travels, Mo Tuer-World Children's Literature Series, Oliver Twist, How Steel was Tempered, etc.