Simplify the following text for a Grade 7 native English-speaking person.
Original: Now it is owned by the Communist People 's Republic of China see History and Political problems of China .
Simplified: At the UN , it was present under the name `` China '' until it lost its seat to the People 's Republic of China . Since then , the name `` China '' has been commonly used to refer only to the People 's Republic of China .