You can be proud your ancestors fought against Manchu invaders,it's their duty in later Ming-early Qing period to fought againjst Manchus,I'm nothing against it,but the Manchus conquered Hans just like Hans conquered southern minorities,the southern minorities invaded Hans?No,but they were still conquered by Han Chinese,those happed in anciet,not in modern world,so those are normal things.But then again the Qing dynasty became a Chinese dynasty later and the Manchus fought for China,to against the Jungars,the Russians,the Gurkhas,the Burmese and so on,and the bandhits of Chinese proper,many Han Chinese also took part in those actions and part of Imperial Qing army
You are from Zhejiang,in Zhejiang,it's a rare chance for people meet a Manchu,as far as I know,those anti-Manchu netizens uaually from southern China,in real life,they even can't meet Manchus,they even don't know how the Manchus lived and how the Manchus thought,still they trash the Manchus,use the words like螨虫,鞑子etc