Simplify the following text for a Grade 7 native English-speaking person.
Original: Penjing generally fall into one of three categories classified by subject matter : Tree Penjing , Landscape Penjing , and Water and Land Penjing . Japan 's bonsai tradition ( bonsai being the Japanese pronunciation of penzai ) is derived from penjing .
Simplified: Penjing is very similar to ( and came before ) the Japanese art of bonsai .