Rửa bí ngòi. Cắt bỏ hai đầu. Bỏ hạt.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Even if there's no visible dirt you should always wash them under fresh running water to rinse them of any pesticides or lingering bacteria. With your hand, gently rub the skin of the zucchini while holding it under water until it no longer feels gritty. Remove both the stem end and the flower end of the zucchini with a sharp paring knife. If the zucchini is greater than 2 inches (5 cm) in diameter then the seeds may be large and bitter. If this is the case then carefully split the zucchini from