Deleting a lot of tweets but keeping the same number of tweets you've always had?

[Jenny]

So lately on twitter I've been seeing that people have been deleting all their tweets up to a few days ago but still keeping the same number of tweets they have always had. For an example, one girls twitter I was looking at said 45k tweets and I remember she always had that, then when I was scrolling through all her tweets and it only showed 20 of her tweets but still kept the "45k" number. Her first tweet of those 20 was "fresh start" too so she did something where she deleted all tweets she didn't want and started over but kept the 45k number. It's kinda hard to explain, but I wanna know how she did this so bad. How can I delete most of my tweets but not have it say 0 I want it to stay at the number that I have now. Btw I've seen other people do this too