How is PG okay with this? LOL war with China.. the founder is Chinese.
In a democratic multiethnic society you shouldn't question the allegiances of people -- see the history of McCarthyism in the 1950s, or before that Japanese internment, and before that the anti-German sentiment.
And not that it matters, but the name Tseng uses Wade-Giles romanization which is not used in China anymore. This indicates the founder may be of Taiwanese heritage. The Pinyin romanization of that name is "Zeng".
Oh yes you should. In this case the founder's allegiance survives scrutiny, but it doesn't mean you should forgo vetting or pretend one's origin has nothing to do with his possible motivation to betray.