You will know after reading these two books. I cannot say that they are very similar, I can only say that they are exactly the same. Is Feilu's review so lax now? You can still go on? In the past, I had similar, similar, or even similar thoughts, so I tolerated them. These two books are exactly the same.
But having said that, this book with a lot of words is actually very well written, so the author needs to add more updates!