Who is this man in the photo? Some people say it's Zhang Xiaolong, a kind of loneliness. In fact, everyone is lonely when he comes to the world. Compared with Weibo, WeChat socializing is more private. It can be said that this villain is everyone.

Speaking of this picture, in fact, the earth behind it is not a picture made by itself, but a real photo called "Blue Marbles".

Why did you choose this photo? Because this photo is of great significance: this is the first time that humans have seen the earth from space. Photographed at 1972, 17 on February 7th, and shot by three astronauts on Apollo 17 with Hasselblad camera with 80mm lens.

Since then, the Apollo moon landing program has stopped, and people rarely photograph the earth from this distance. Of course, there is a second reason:

The earth in this photo is just above Africa, and the WeChat team explained it like this:

The African continent is the birthplace of human civilization. We use the cloud picture over Africa as the background picture of the startup page, and we also want to give the startup page the meaning of' origin'.