September 26-29 participated in the AO Spine Mentor Cooperation Program in Switzerland, met a lot of bull professors and a total of 7 students from all over the world, the atmosphere of the meeting is very relaxed, after the meeting, there is a day to visit the most beautiful city in Switzerland: Lucerne, the cost of living in Switzerland in Europe is supposed to be the highest, but Switzerland is also the most European characteristics of the country, the meeting I gained a lot, looking forward to next year’s meeting in South America.