Recently, people have been demanding the wrong-doers to apologise for their past misdeeds and injustices done to others.
This watermelon appeared very angry as a result of someone carving it. You know, about 150 years ago the Europeans, starting from the British, began carving out China like no body's business. Just like the watermelon. Strangely, the Chinese never brought up the subject of an apology from these belligerent nations!
Check this out: http://en.wikipedia.org/wiki/Opium_war