Two-part allegorical saying of cantaloupe "Wang Po sells melons". It's about a man named Wang in Song Dynasty, named Wang Po. Because he talks a lot and behaves like a mother-in-law, people nicknamed him "Wang Po". Wang Po's hometown made a living by planting melons in the Western Regions. The melons planted in that area are called cantaloupes, which are today's cantaloupes. So Wang Po sells melons among melons and cantaloupes.

Women selling melons are quoted from the saying "women sell melons and boast themselves", which is also called "Pharaoh sells melons". It is used to describe merchants who take the initiative to publicize and dare to sell.