How many casualties did China and Vietnam suffer in the counterattack in self-defense against Vietnam?

The first thing that needs to be clarified is the number of casualties in our army, a figure that I have seen several versions of: the Vietnamese media reported that more than 30,000 of our troops were wiped out, and my PLA Daily reported 4,000 casualties, which are questionable.　Recently, I inadvertently bought a book on the old bookstore in the Kunming Military Region Logistics Department to prepare a summary of the work of self-defense counterattack on Vietnam, this book describes in detail the 1979 - 1987, I counterattack on Vietnam in self-defense logistical work, because this is a military internal publication, some of the figures in the head is quite informative: February 17, 1979 to March 16, our troops **** sacrificed 6954 people, wounded more than 14,800 people, especially February 17, 18 two days casualties amounted to 4,000 people, so that the logistics department was caught off guard, unable to save all the wounded died a lot, a profound lesson. Laoshan front, our army *** sacrificed 939 people, supporting the former civilian workers sacrificed 64 people In addition, according to the data published in 1979 by the Vietnam Labor Newspaper on civilian losses, Vietnam lost 50,000 civilians in this war, so it can be deduced that Vietnam's casualties in the '79 war, definitely in more than 100,000 people. Our army suffered 27,000 casualties and Vietnam suffered 100,000 casualties, you say, such a battle our army fought beautifully or not, such a battle, did our army win or lose? The answer is obviously yes."