The furthest distance

Of course, she remembered that too many things had happened under this tree. This was the first time she had met this little boy.

"Sissy, what is this!" The boy ran his fingers lightly over the corners of her eyes.

"According to the adults, this is a mole. People with a mole are prone to crying." The little girl across from him answered in a young, serious voice.

"Don't worry, I will always protect you. I definitely won't let you cry!" The little boy patted his chest like a man and promised.

"Really?" You have to come and protect me every day, so we need to keep our promises! The two of them hooked their hands and laughed happily under the tree.

But one day, the little boy didn't appear under the tree as he had planned. Ever since then, the little girl would wait under the tree for a long time every day, but she never saw him again.