I want to know the answer to the following question:
When was the high tide of the Cultural Revolution?
All the background I'm provided with is that "After the People's Republic of China took control of Mainland China in 1949, the Republic of China government based in Taiwan continued to control the Dachen Islands off the coast of Zhejiang until 1955, even establishing a rival Zhejiang provincial government there, creating a situation similar to Fujian province today.". Is that enough to answer the question?
Answer: no