黄瓜 was originally called 胡瓜 (húguā, 'foreign melon') because it was introduced from Central Asia. The name was changed during the Later Zhao dynasty.
culture
拍黄瓜 (pāi huángguā, smashed cucumber salad) is one of China's most beloved cold dishes — cucumbers are smashed with a knife, then dressed with garlic, vinegar, and sesame oil.