that China (Qing dynasty) is long gone.  The current regime in the mainland cant even its last 70 years straight  and a terrible track record for long-term planning🤦 , how are they expected to settle a grudge from centuries before? Giving them too much credit

Chinese history is never-ending civil war（分久必合，合久必分, observing from across the Strait cant see how history wont repeat itself. 

 Perhaps, but do not underestimate the staying power of a grudge, even an irrational one.

Especially not when it is a maintained notion in the halls of power in the PRC. 

 do not overestimate lip service  

 Indeed. It is certainly being used to power the Beijing agenda in a form of centrally dictated populism, so not all of it is genuine, and I personally do not believe that Chinese people in general hold a grudge against Westerners.

We shall see where it leads in time. 

 yes, as a people in china, we don't hate anyone.

but some people is misleaded by CCP, hate some west country... 

 if it really is about a grudge they'd be smart about it, arguably the nation-state that has taken the most from China throughout the years would be Russia, not any of the Western Powers  🤷  (I.e. Treaty of Aigun, Peking, etc)