In another, a wizard on the land and a queen in the ocean exchange a pack of food each day to taste delicacies from each other's environments. After many years of this, the sea was full of plastic bags, causing serious pollution and harming the animals.

"I will be pleased if some younger readers remember one story from the book when they grow up, and it helps them make an important choice when they meet a similar situation," Wang says.

One reader comments online, "The stories in the book are free, modern and a bit experimental. I believe it's his way of communicating something to his child in a gentle and fun way, and these messages will have a lifelong influence."

Wang says he believes making up such stories and sharing them with his daughter will help her grow in some way. "But there are no significant changes so far," he says.

In the years he has spent making up stories for the girl, Wang says it is he who has changed the most.

"I've found a way that I can genuinely and comfortably get along with my child, and our bond is getting stronger," he says.

"I believed that, in a parent-child relationship, it's always better to make demands of yourself than to make demands of the children. According to my observation, if adults can do well at something, children will soon catch up and even surpass us," says Wang.

Contact the writer at zhouwenting@chinadaily.com.cn