After entering the summer, the most important factor affecting the human body is the poison of summer heat and dampness, so eating some cool vegetables is conducive to promoting fluid production and quenching thirst, relieving summer heat, clearing away heat and purging fire, and expelling toxin and relaxing bowels. Vegetables listed in summer, such as bitter gourd, loofah, cucumber, wax gourd, watermelon and wax gourd, are all cool vegetables. Tomato, eggplant, celery, lettuce, asparagus, watercress, cold potato, etc. It's also a cool vegetable, so you might as well eat it often.