かね
kane

Particle

1. interrogative sentence-ending particle expressing doubt

世界せかいてき過大かだい評価ひょうかされた中国ちゅうごくしょといえば、『孫子まごこ』ですかね。
sekaitekini kadaini hyōka sareta chūgokushoto ieba 'magoko'desukane.
When it comes to Chinese books that are overvalued worldwide I suppose it's Sun Tzu, isn't it?