The agent said it would be done so soon. If you provide relevant information, it may be possible, but you should keep an eye on it and let the intermediary show you the Hangzhou Housing Inquiry Form issued by Hangzhou Housing Management Bureau, so that you can rest assured and pay more attention to buying second-hand houses.
Your wife is from a foreign country. If she goes back to her hometown and does not have a house certificate (one-time payment is not needed), she has already entrusted notarization. In some places, she also needs a contact letter from the bank. Generally, you can get the proof of no room on the day you get it from the intermediary. It's simple.
I hope I can help you. -Allen Dadi Taobao Men's Clothing Store