The little boy in the book is full of fear and fear about the strange city where his grandmother lives, but his grandmother gave him a red cloak to make him brave. He learned to discover the beauty of the city, slowly opened his heart, accepted and tolerated everything, and finally he began to like the city.

Grandma's red cloak is mild in overall color. Although there is no exquisite painting style, there are many details worth seeing several times. The theme color of the picture book is red, which represents unrestrained, fiery, happy and passionate. At the same time, there is a contrasting green in the book, which represents peace, tranquility and comfort. The author skillfully switches between red and green, and draws the psychological changes of grandma and "I" at this moment.

Grandma appeared wearing red glasses, a red bag, red shoes and a red hat. I can see that grandma is cheerful and sunny and loves life.

But after returning to the apartment, grandma put on green glasses, which is because she is afraid to accept "me", respects my personal emotional expression and does not force "me" to accept the city immediately. Grandma knitted a green cloak instead of a red cloak, which is also a hint from the author.

A very simple story, but there are many emotional ups and downs of "me" and grandma. It was grandma's tolerance and companionship that made me out of fear and taught me not to escape, but to actively adapt to the new environment and changes.