Do I need to bring cotton-padded clothes or something to Huashan now?

Be sure to bring it. The temperature on the mountain will be 5- 10 degrees lower than that in the urban area (please refer to the weather forecast in Huayin County). There will be light snow and snow showers in many places on the mountain. I suggest you take some warm clothes and two sets of underwear. Because you have been moving up the mountain, you won't feel cold, and you may sweat more, but it will be very cold after climbing the mountain and returning to the rest place. If you don't change your underwear, you should be able to imagine what it would be like, hehe. In addition, things on the mountain are more expensive, and any scenic spot is the same. For example, a bucket of instant noodles needs 10 yuan. You can use this comparison to calculate.