It can't be too long, and it's just a dozen strokes of it, because whether it's good for herbs, it's good for herbs, it's good for herbs, it's good for herbs, it's bad for herbs, it's bad for herbs, it's bad for herbs, it's bad for herbs, it's bad for herbs, it's bad for herbs, it's bad for herbs, and it's bad for herbs, and it's bad for herbs, and it's bad for herbs. That's why you have to fire fast. All the materials are in the pot for two or three minutes. That's enough