Aii Language Center, Mao Tse Tong campus
was established on January 21, 2005, located at House No. 140 & 210, St 245, Sangkat Tomnob Tek, Khan Chamkamorn, Phnom Penh, Cambodia. There are three school buildings namely as Aii Building, QLH Tower and Villa 4 Building.
Aii Building
is a seven-storey building of 3090 m2 and land size of 558.92 m2. Currently, this building accommodates +800 Aii students and consists of the following facilities:

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- 1st Floor
- Lobby
- Information Office
- Administration Department
- Bursar
- Panda Cafe
- Intercon Bookstore
- Mezzanine
- Finance Department
- IB Office
- IB Warehouse
- Maintenance Storage Room
- Office of Building Inspector
- Documentation Room
- 2nd Floor
- Academic Office
- Office of the Academic Secretary
- Interviewing Room 1
- Interviewing Room 2
- President Office
- Locker Room
- Testing Room
- Server Storage Room
- Copy Center
- Aii Meeting Room
- 3rd Floor
- Finance Documentation Room
- TOEFL iBT Room
- Classrooms
- Procurement Department
- 4th Floor
- Classrooms
- 5th Floor
- Classroom
- 6th Floor
- Alex Food Court
- 7th Floor
- IB Warehouse
- Visual Artist Room
- 1st Floor
QLH Tower
is a sixteen-storey building of 5365.57 m2 and land size is 364 m2. It is located at House No. 25 , St 402, Sangkat Tomnob Tek, Khan Chamkamorn, Phnom Penh, Cambodia. The building was inaugurated on May 15, 2010 for American Intercon School. For the time being, QLH Tower accommodates +650 Aii students and it consist of:

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- 1st Floor
- Lobby
- Student Affairs Office
- ICES Cambodia
- Mezzanine
- Lobby
- Smart Mart
- 2nd Floor
- Classrooms
- 3rd Floor
- TESOL House Room
- Classroom
- 4th Floor
- Academic Office
- Locker Room
- Office of Academic Secretary
- Teacher Lounge
- 5th Floor
- Classroom
- 6th Floor
- Computer Lab
- Laboratory
- Classroom
- Server Room
- 7th Floor
- Student Lounge
- Panda Café
- 8th Floor
- MJQ Library
- Classroom
- 9th Floor
- Classroom
- 10th Floor
- Alex Food Court
- Yummy Office
- 11th Floor
- Human Resources Department
- MJQ University Press
- Office of Intercon Rooster
- Audit
- Meeting Room
- Interview Room
- 12th Floor
- Office of Construction and Design
- Office of Security Public Service Department
- Office of MJQ Foundation
- Information Technology Department
- Office of the Operations
- Office of MJQ TV
- 13th Floor
- SHH Conference Room
- Office of the Founder, Chairman and CEO
- 14th Floor
- Living Room
- Bedroom
- 15th Floor
- Penhouse
- 1st Floor
Villa 4 Building
is a four-storey building located at House No. 3C, 5 & 7, St 388, Sangkat Toul Svay Prey, Khan Chamkamorn, Phnom Penh, Cambodia. With the total building size of 3091.006 m2, it stretched over 567.165 m2 land. In 2008, Villa 4 housed both American Intercon School and Aii Language Center. With expansion, it was newly renovated in 2018 and now accommodates +1,300 Aii students. The building features the following facilities:

- 1st Floor
- Playground
- In-house Female Staff
- In-house Male Staff
- Smart Mart
- Food Court
- Student Affairs Office
- MJQ Student Health Center
- Classroom
- 2nd Floor
- IT Lab
- Classroom
- 3rd Floor
- Counseling Room
- Academic Office
- Teacher Lounge
- MJQ Library
- Classroom
- 4th Floor
- Classroom
