Li Hongzhi travels all throughout China giving 54 lectures and class series on Falun Gong. The classes typically last 8-10 days, two hours per day. Seminars are often arranged by local government-run qigong organizations. The number of attendees range from a few hundred to upwards of 6,000 per event. By the mid-1994s, Falun Gong was well on its way to becoming the most popular system of qigong in the country, having attracted millions on the basis of its moral philosophy, free teachings, the simplicity and flexibility of its exercises, and its efficacy in improving health.