One china is made out of the mainland China, with Beiging as its capital, while the other is of Taiwan, an Island, that does not follow mainland Chinas view or rule.
writing: Simplified,Traditional
what is the difference between a republic and a monarchy?
What is the time difference between Memphis TN and China
== ==
The difference is the spelling.
In a republic, people elect representatives to do the governing.
There is a three hour difference in time between California and the Dominican Republic. The Dominican Republic time is ahead of California time.
china is bigger
The Republic of China (ROC) was founded 1911 and until 1949, governed all of China. The People's Republic of China (PRC) was founded in 1949 after the Communists defeated the Nationalists in the Civil War. The ROC moved to Taiwan. In the 1970s most of the world stopped recognising the ROC, both as the legitimate government of China, and as a sovereign state. Recognition went to the PRC, which is now commonly known as "China", while the ROC is commonly known as "Taiwan".
One is the world's most populous country and the other is an island that was once part of it. One is a single-party state and the other is now a democracy. One was originally communist but these days increasingly capitalist and the other is capitalist.
the US actively supported the republic of China, and the Soviets did the same for the People's Republic of China
There is no time difference between Singapore and China.