I decided to supplement the dog house. Here's how to supplement it: First, if the dog house is in contact with the ground, cold will be transmitted, so lay a brick or pallet underneath and place the dog house on top of it. Second, spread soft rice straw (purchased online) inside the house to keep warm. It is best not to lay down blankets or blankets as they absorb moisture. Instead, it is better to wrap the blanket in plastic (large plastic, such as comfort vinyl), then wrap it around the outside of the dog house and secure it with tape. Third, cover the entrance to the dog house with plastic, but cut it vertically so the dog can come and go freely. Due to the surrounding environment, the above method could not be fully implemented, but it will help your dog feel a little less cold. - illustration