What does Pete Hegseth mean by "imminent"?

Talking to a bunch of top people in the foreign and security policy business in Singapore, Pete Hegseth, the Trumpite US defence secretary, warned that a Chinese attack on Taiwan was "imminent". What does he mean by "imminent"? The definition of imminent is "likely to happen at any moment" and is generally accepted to mean that whatever it is is on the very point of occurring. Like, a person's death is "imminent", ie he has hours to live. So is that what Hegseth meant? That China is literally poised to invade Taiwan, like tomorrow or the next day at the latest? Surely not. I don't think so. If it was true, there would be signs of a massive build-up of PLA warships, amphibious craft, fighter jets, ballistic missiles all turned in the direction of Taiwan and so on. But there is no sign or any intelligence of this going on. Nor do I think Beijing is actually ready for an invasion of Taiwan. Politically, Xi Zinping might just risk it in the belief that Trump won't bother to retaliate by defending Taiwan, but, militarily, the PLA needs more time for rehearsals. They've got until 2027 when Xi said Taiwan will be back under the Beijing fold whether by diplomacy or force. So, not imminent then, not tomorrow or next week or even next month. Hegseth was stirring it up, I guess, and he certainly did that with Beijing which warned him to stop interfering.