I'm not one to offend easily, but ethnic characterizations like this really discredit the author and distract from the issue. I find this usage particularly jarring - it's at least somewhat derogatory, rather obscure to me (I had to look it up,) and completely unhelpful. An entrepreneur with an ethnic name should know better.

Presumably, this phrase comes from the Great Wall of China, which ironically was itself more symbolic than effective.

"Firewall" would have worked just fine.