أرسل هذا في رسالة قصيرة: Parental Migration and Children's Psychological and Cognitive Development in China: Differences and Mediating Mechanisms

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