Complex sentence: Shuizhai High School (Chinese: 水寨中学) established in 1914 was once as a private primary school named Zhenxing Primary School and turned to be Zhenxing High School in 1950.
Split into simpler sentences: Shuizhai High School (Chinese: 水寨中学) was established in 1914. It was once a private primary school named Zhenxing Primary School and turned into Zhenxing High School in 1950.