Pls be noted this kind of short time visa is simple , the school would provide the invitation letter.

Job description:
1. About 3 months for the whole class.
2. The classes need to teach:airport security management, air transport management, air operation command. The content of those classes is simple and not very high requirement.
3. weekly class:within 16 classes per week, each last for 45 minutes
4. No office hour
5. Student age: college students

Requirement:
1. Major in related subjects or have related experience both ok.
2. Should be fluent in English with nationality not limited
3. Should have a master or above degree
4. Be mental and physical healthy

Salary and benefit :
1. Monthly salary :20 to 30K per month
2. Flight reimbursement
3. Free accomodation and cheap meals
4. Insurance provided