Xu Jin holds a sign with the words "#D-Strong" and "We love you, come on" at the Juyongguan section of the Great Wall in Beijing, Jan 12, 2016. [Photo/Asianewsphoto.com]

Xu has asked a friend to upload the photos to Facebook in the hope that Dorian will see them and find some comfort.

"I just did what a human should do," Xu said. "Let's pray for Dorian."

A Chinese Internet user named Zhang Heng even made a souvenir badge for the boy that depicts Dorian on the Great Wall.

After receiving the regards and greetings, Dorian's father, Christopher Murray, said on Facebook on Monday: "A couple of the first photos to come in! The power of social media! More are coming in! Dorian is going to be so pleased! Keep them coming!"

The father also posted two of the photos, one of which showed Chinese netizens greeting Dorian with a large cardboard sign with encouraging words.