Simplify the following text for a Grade 6 native English-speaking person.
Original: Baekdu Mountain , also known as Changbai Mountain in China , is a volcanic mountain on the border between North Korea and China , located at .
Simplified: Baekdu Mountain ( ç 1\/2 é å ) \/ Changbai Mountain ( é ç 1\/2 å ) is a volcano on the border between North Korea and China . Border line , This mountain is 54.5 % of North Korea territory , The territory of China is 45.5 % .