Guess what kind of nut is pictured below?

This is a nut?

I'm not well read, don't lie to me ......

Yes, this is the nut - cashew.

The "big tumor" on top is a floral receptacle, and when ripe, it can "pass" for a fruit, soft and juicy, sweet and sour, but also rich in vitamins B and C. Where cashews are plentiful, they're called CashewApples (CashewApples). (CashewApples). Because it is perishable and usually spoils in a day, it cannot be transported over long distances and is rare in China.

The Chinese most often eat the fruit below. But before the advent of shelling machines, manually removing cashew nuts from their shells was an arduous and dangerous task. Because, under the cashew nut appearance, there are countless drops of poisonous "cashew nut shell oil", highly corrosive, touching the skin will cause dermatitis or serious burns. At that time, people had to dry it in the sun, and then put it on the fire, until the hard shell burst, and there was little of the poisonous cashew nut shell oil left, before taking it down to cool, and then wearing gloves to take out the kernel. As a result, the processed cashew nuts have become "noble".

Of course, cashews grow into this is not in order to let us eat a fruit, mainly to protect and spread the seed. It does not hesitate to call on its own resources to "feed the fertilizer" receptacle, will be made into a conspicuous delicacy, to lure greedy animals to enjoy, and to poison the shell to force them to throw away the kernel, and then to achieve the purpose of spreading the seeds. Therefore, the emergence of cashew nuts is a major upgrade in plant intelligence and a great progress of the entire plant world.