Help you fully understand your computer - Z weapon

Not long ago, someone wanted to buy a second-hand laptop. Due to our superior-subordinate relationship, I didn't bother to explain to him why "buying a second-hand laptop is not as good as buying an EeePC" and such reasons. If you're going to take on the task of evaluating a second-hand laptop, you need to be well-prepared. It's not an easy job. If you have the same idea, you might want to take a look at this article.