the difference of Nchina and Ochina? N and O starts from1906
if you want to see New china, go to South of China.
if you like Old China, go to North of China.
if you don't like N China or O China, but the whole China.
Cross China maybe the best choice
if you are an enjoyable tourist, go to Beijing and Shanghai
the Biggest City in China
if you are a hardlike tourist, go to climb the Great Wall
or the Tibet.