How can I reply to the housewarming when I have no time to go?

This situation can be answered in the following ways:

First of all, express your apologies and regrets. For example, "honey, I'm sorry I can't come to your housewarming party." I know this is an important moment for you. " Then, express your blessing and support to them. For example, "although I can't be there to congratulate you in person, I want to tell you that I sincerely wish you happiness in your new home." I hope this new home can bring you more beautiful memories and warm experiences. "

Finally, if conditions permit, remedial measures can be proposed. For example, "although I can't attend the housewarming banquet, I want to visit your home at a suitable time in the future and give me whatever help I can." Once again, I wish you a smooth renovation of your new home and a happy life! "