夏天夏天呼叫西瓜西瓜西瓜呼叫夏天
[xià tiān xià tiān hū jiào xī guā xī guā xī guā hū jiào xià tiān]
The nickname "Summer Calling Watermelon Watermelon Calling Summer" creates an image using summer and watermelons that typically come together during this time. It suggests a light-hearted and playful personality. The repetition also emphasizes the close link between them, as summer often reminds people of watermelons and vice versa.