I guess what he is saying is

来源: 于 2010-09-12 15:17:34 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

simply reject it, only pay deposit after bank approves the deal.

Becasue if you deposit the money simply after seller agrees the contract, it would take time to get the money back when bank rejects the offer.