Little pig Awen had a whim and wanted to send a "big hug" as a special birthday gift to grandma that lives thousands of miles away. As such, Awen and his mother went to the post office and told the staff, Mr. Ni, that he wanted "to send a big hug" to his grandma. After his mother helped Awen to write the address of his grandma’s house, Awen gave Mr. Ni one big hug, and said: "When you give a hug to the postman, it must be as big as this hug!" Then, through the delivery of the special mail "Hug", each postman along the mail chain would embrace each other. Finally, when the "hug" was sent to grandma's house, grandma was very happy and decided to ask the postman to send another special gift to Awen. What would this same special gift be? What happened between the postmen during the hug transfer? A simple idea, a small practical action, but it greatly enhanced the relationship between people, making them warm and happy. This book uses the process of "mailing a hug" to bring back the long-forgotten human touch, bit by bit. This kind of simple interaction between people is full of creativity and warmth. In the end, the kisses given on the face of the little piglet is laughable. The animal shapes in the story are varied, some are big, some are small, and some are even covered with spikes, which adds a bit of twist and interest to the process of conveying the hug. With a playful and lively narrative, both adults and children are suited for reading and enjoying the sweetness and happiness that the book has to offer.