“Is there any holiday/festival that it will be closed?”

Hi! I was told that the Forbidden city is closed from September 1 to 3 due to government activities, how true is this? And for those who are in Beijing, how restricted do you think will the grounds be? Could I at least see Tiananment Square? It is such an unfortunate timing as I will be there at exactly these days and planned to see this particular monument. Thanks for your attention! :)