https://hi-edu.my/mandarin/wp-content/uploads/2025/07/04-01-课文一.mp3 https://hi-edu.my/mandarin/wp-content/uploads/2025/07/04-03-课文二.mp3 https://hi-edu.my/mandarin/wp-content/uploads/2025/07/04-02-课文三.mp3 https://hi-edu.my/mandarin/wp-content/uploads/2025/07/04-04-听力练习4.mp3