西瓜是夏天的情人ing
[xī guā shì xià tiān de qíng rén ing]
This online name expresses that watermelon ('Xigua' in Chinese) is associated with summer as if it were its lover. It shows a romantic and affectionate attitude toward summer, especially enjoying eating watermelon as part of the experience. The '-ing' suffix may also imply that this relationship between 'watermelon and summer' or the love for these elements continues.