(I) The wife was up all night. The next day, she went to a private detective agency, handed over 2000 yuan, and entrusted the private investigator to gather all evidence of her husband's infidelity. A week later, the husband received a court summons; his wife was suing for divorce. In the end, the husband was judged as the party at fault, and the house and all family assets were awarded to the wife. This wife is from Beijing.
(II) The wife was up all night.