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  ______    _____     ______   __   __   _    _   
 /_   _//  |  ___||  /_____//  \ \\/ // | || | || 
 `-| |,-   | ||__    `____ `    \ ` //  | || | || 
   | ||    | ||__    /___//      | ||   | \\_/ || 
   |_||    |_____||  `__ `       |_||    \____//  
   `-`'    `-----`   /_//        `-`'     `---`   
                     `-`

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Text this: A comparative study of the vocabulary in primary school Chinese textbooks in the perspective of distribution, usage & level of difficulty