I noticed that when the two players of "tower combination" from China Mainland lost the game to their rivals from Chinese Taipei in the men double of badminton final, Tokyo 2020, the Mainland netizens blamed on duo for their lacking will to win and team cooperation, or even accused them of their discord.  But to the winners from Taiwan, those netizens were not reluctant to show their respect and admiration until that Li Yang wrote "My country is Taiwan." 

The younger sister of that no-styled S sisters rooted for the players of Chinese Taipei and called them our "national" athletes, the four sponsors immediately terminated the ad contracts with her.  Why did the sponsors react so quick like that?  Because most Mainlanders are not perfect lovers who can tolerate unrequitted love forever, the love with lowest standard: we are all Chinese.

To tell you the truth, Taidu and Dutai.  China government is paying little attention on the island, she is exerting most of her energy to tackle with world affairs that might hinder her from reviving.  The discontent with Taiwan mostly comes from the mass netizens, whose power may not influence the policy of China government, but it definitely will hurt the people making money, studying, or even living in China Mainland.