Willy Brandt kneeled down in Warschau, ring a bell?

Using one's OWN singing recording for better audio during performance, is different than lip-sync with OTHER PEOPLE's VOICE are different, don't you think so?

Is it too hard to understand, or it's again that FACE-SAVING mode kicking in?

The engineer is responsible to the contract, whether he and his team lead apologized to the team and the committee, we don't know, but they don't need to apologize to the whole world. Get your fact and logic straight.

As your first ranting of "两个凡是", is just the usual distorting of fact. If you can't argue based on the topic, and have to resort to twisting and playing victim role, let's just call it a day. I don't have slightest interest to change you.