It would be difficult to justify a direst invasion of Taiwan to the Chinese public. There is a lot of intercourse between the two populations especially so at the beginning of the Chinese economic revolution.
When they brought trainloads of young men and women from the interior to work in Shenzhen, Guangzhou and Xiamen they couldn't be taught the job properly because they only knew Mandarin and didn't speak Cantonese, Hakka etc. There were no skilled operatives around so the Japanese and Taiwanese companies used Taiwanese teachers who could speak Mandarin. That still goes on, so for a large part of the urban population the Taiwanese are their friends.
There are over a billion mobile phones in China plus unrestricted BBC and CNN so the days of them living like mushrooms have gone.
China still has over half a billion to drag up from near poverty so it is not going to risk its economic progress on a domestic dispute.