Speculation on why the Chinese government is rushing the Sinicization of all ethnic groups

The movie 'Battle of Lake Penghu' tells the story of how Srang, a Han Chinese traitor who surrendered to the Manchus, annihilated the remnants of the Ming Dynasty on Taiwan island who were shouting "Restore the Ming, Overthrow the Qing."
This movie, which cost over 100 billion won, has been indefinitely postponed due to public backlash caused by strange public sentiment.
Lately, Han chauvinists have been increasing in China. China itself is a country where the Han people are the absolute majority..
They are called "Huanghan" (Han supremacists), and they support a 1644 historical view (the year the Ming Dynasty fell), which claims that the superior lineage of China was severed when the Yuan and Qing Dynasties were conquered by barbarians, and that the Ming Dynasty was destroyed and conquered by the Manchus, meaning the Qing period was a time of rule by barbarians.
The Chinese Communist Party is enforcing an old-fashioned historical view that all of the more than 50 ethnic minorities are also Chinese, and they are censoring such views as "harmful historical views" and "historical distortion."
However, these Huanghan continue to emerge even despite censorship.
The number of people insulting the Qing Dynasty and the Manchus is also steadily increasing.
It seems the Chinese authorities have now reached their limit and are simply trying to Sinicize everyone as quickly as possible.
Lately, for ethnic minorities like the Joseonjok (Korean-Chinese) and Mongols, their native languages are no longer being taught in schools.
China implements 'Law on National Unity'... Overseas ethnic minority activities also punished
China implements 'Law on National Unity'... Overseas ethnic minority activities also punished Newsworks [Newsworks = Reporter Eom Jeong-sik] China implemented the 'Law on National Unity and Promotion of Development' starting on the 1st. It is a comprehensive law that contains contents forcing a single national identity centered on the Communist Party on ethnic minorities such as Tibetans and Uyghurs, and it applies to activities outside the borders. This law prohibits acts that hinder unity among China's 56 official ethnic groups or promote ethnic division. Schools and government agencies [must use] Standard Chinese…