German Press Agency dpa dubbed Zhang Yufen "China's number one ladies' detective", while the Washington Post has traced her affairs-hunting history.

Despite a huge demand for private detectives, the profession still is illegal by Chinese law. Should there be a change?

Topic2 More Chinese Rich Prefer Luxury LingerieMore and more Chinese rich now hide their wealth under their clothes. According to the Wall Street Journal, lingerie stores in China are seeing strong sales of expensive bras and other pricey underwear, defying a broad drop in luxury sales in the vast domestic market.

First question, how much do you spend on your underwear on average? Are you willing to pay thousands of yuan to buy skivvies?

Topic3 Divorce unnoticedChinese actor Chen He's recent admission on Sina Weibo that he had concealed his divorce for the past six months has prompted a feverish discussion in the country about the emerging social phenomenon of yinli, or "invisible divorce" - referring to mutual arrangements in which a couple who are legally divorced continue to pretend that they are married for the benefit of their friends, family members and colleagues.

In some cases, the divorced couple might continue to live together, either to maintain the illusion that they are married, or because they cannot afford another apartment.

Is it a growing phenomenon?

Topic4 Excessive use of endovascular stent surgery in ChinaWith one death every 10 seconds from cardiovascular disease in China, there has been an ever-growing number of stents implanted.

However, a growing trend of coronary-stenting overuse has emerged in the country, with a lack of regulations to control the abuse.

Is there a problem?

Topic5 Work Pressure ReportA new year begins, do you feel spunky and can't wait to work, or are you already tired and stressed out?

Recently, business-oriented social networking service LinkedIn issues a workplace pressure report, indicating that 44% of the office workers in China are under heavy pressure.

Is it normal?