Just my opinion here, spy is probably fine, coworker is big no no. If I got a spy to bang, after it's done I'll publicly praise her on Twitter to thank her for the good time (assuming it is, otherwise I will have give advice) and tag my wife too so we can actually try the tricks at home but this time with true love. If a female coworker enters a meeting room alone with me, I'll insist that she keep the door behind her open so everyone can supervise what we are doing.
It's kinda pity. Mr. Huang seemed a nicer guy than the other CEOs, less dicky, trying to be useful etc. But then maybe that's why the other CEOs act like they do, a way to filter out the less loyal members from the company board. If Mr. Huang survives this, maybe he should get rid of whoever supported his ousting from the board, wasting money to breed a coup always burdens earning potential.