WeChat just made a subtle but symbolic change this Monday. The app’s iconic launch screen, which features a photo of the Earth taken by NASA from the outer space, was replaced by one taken by FY-4 for a short period between September 25 and 28. This is the first-ever change that the company has made to its launch screen in its six-year history.

The image swap was intended to celebrate the official use of FY-4, China’s second generation of meteorological satellites. The current FY-4A is the first of the series and successfully launched in December last year.

While both images have a boy silhouette standing in front of the Earth, the angles from which the pictures were taken are different. The original NASA photo, usually dubbed Blue Marble, shows Africa as the center of the sphere, while the FY-4’s photo puts China in the middle.

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Emma Lee

Emma Lee is Shanghai-based tech writer, covering startups and tech happenings in China and Asia in general. We are looking for stories related to tech and China. Reach her at lixin@technode.com.