Why does Madame Butterfly have such charm? He Yue Lan, a Hunan native, developed network marketing pyramid schemes by recruiting members and offering high returns. She developed more than 60,000 members across 29 provinces and cities, involving 335 million yuan. The Chenzhou police called this case the "biggest pyramid scheme of 2009". On May 17, He Yue Lan, who called herself "Madame Butterfly", was arrested on charges of illegal business operations. (According to Beijing News on June 3)