According to McKinsey, people usually remember one, two, three, but not four, five, six, so everything should be summarized in less than three. This is now widely circulated in the business world "30 seconds elevator theory" or "elevator speech".
In the workplace, no matter how good the relationship is, it seems fragile in front of interests. Two people who can't wear a pair of pants can fight for their own interests. So the saying "the workplace is like a battlefield" is absolutely true.