in eastern China 和 in east China哪个对

in eastern China 和 in east China哪个对 in the east part of China 和in the eastern part of China 哪个对 in east China 和 in East China 和 in eastern China 和 in the Ea in eastern China=in the east of China? in the east of China 和 in the eastern China 有什么区别? East China,in eastern China,in the east of China究竟有何区别? in eastern China=in the east of China=in the eastern past of in north-east China in the eastern China还是in eastern China还是in the eastern of Ch 我随便造个句Guangdong is in eastern China.还是要+in（ the）?还是east?我分不清 Hangzhou is in the east of China in north-east China 同义句