单项选择题

A group of 11 delegates from the Chinese university returned home last week. They came in second place with 13 other university teams.
The conference is the world’s largest university-level UN simulation. It is held each April, for a week, in New York, to give students a chance to debate international affairs. It is meant to mirror the real-life business of the UN.
Teams from more than 23 countries gathered this year to discuss and debate serious issues such as the AIDS epidemic and water shortages.
Some UN senior staff members, U. S. professors, and former student participants formed the judge panel.
The Chinese team applied to take part in the event and was assigned to represent Japan this year, working on various committees and arguing Japan’s position on resolutions to problems like international migration.
According to Li Xiaocong, the Chinese team leader, their efforts in finding approaches to resolutions made them stand out. Li attributes their success to "solid training".
How many Chinese students are involved in the conference