When a cat arrives in a new environment, you can take the following measures to soothe it:
1. Ensure that the new home has essential items such as a cat bed and litter box, and place them in a quiet, dimly lit place to reduce stimulation.
2. Bring your cat's old toys, blankets, and other familiar items to help them feel comfortable in the new environment and reduce anxiety.
3. Don't rush to let your cat explore the whole house. You can first confine them to a small area and gradually expand their range of activities.

4. Reduce noise and stimulation to allow your cat to relax in a quiet environment.
5. Spend more time with your cat, interact with them, pet them, and let them feel your love and warmth.
6. Closely monitor your cat's diet, excretion, and mental state. Consult a veterinarian immediately if any abnormalities are observed.