If you are afraid of the cold, it is mainly due to insufficient yang energy. You can use astragalus, dangshen, cinnamon, dried ginger, aconite, etc. If the kidney yang is insufficient, you can use some medicines that warm and nourish the kidney yang, such as curculigo, fairy beer, cistanche deserticola, Morinda officinalis, walnut meat and other traditional Chinese medicines. You can also eat more mutton and beef in your life, and add some astragalus, which will also replenish yang energy.