How to reply to white kowtow?

First of all, express condolences and concern, and then give encouragement and support to bless the deceased to rest in peace.

First of all, I want to express my condolences and concerns to each other. For example, I am deeply saddened and extend my sincere condolences to you and your family.

In the reply, you can give the other party some words of encouragement and support, so that the other party can feel the support of themselves and the people around them. For example, I hope you and your family can support each other in this difficult time and face the future bravely. Please feel free to contact me if you need help.

Finally, we can express our blessings to each other and wish each other and the deceased rest in peace.