National civil servant: refers to a person who, on behalf of the country or government, is engaged in the management of public affairs and provides public services. According to the "Civil Servants Law" implemented on January 1, 2006, civil servants in China Staff other than work staff. Based on the above definitions, which of the following are people who are not in the civil service? ['Mayor of Beijing.', 'County Secretary.', 'Minister of Labor of Henan Province.', 'Village committee members.']