Simplify the following text for a Grade 11 native English-speaking person.
Original: Beijing is home to a great number of colleges and universities , including several well-regarded universities of international stature , such as Peking University and Tsinghua University ( two of the National Key Universities ) .
Simplified: More 500 famous universities of China are located in Beijing . They also include 5 of the top universities : Peking University , Tsinghua University , China People University , Beijing Normal University and Beihang University .