China produces and consumes more watermelon than any other country. Tapping a watermelon to check ripeness by sound (听声音, tīng shēngyīn) is a common skill. A hollow sound means it's ripe.
history
The name 西瓜 (western melon) reflects that watermelons were introduced to China from Central Asia. Similarly, 南瓜 (nánguā, pumpkin) means 'southern melon.'
