I think 5 1ibm is quite poor. Last year, I also ordered a T420 NC5 on a cheap basis. When ordering the machine, I repeatedly told the salesman (a mm named Heimei) that the machine I got was all tested, and she said that it would be all right. Because of a business trip, my colleague helped me to check the machine. When I checked the machine, there were many problems. The customer told me to accept the machine first through qq. She said that the system was not installed, but my colleague confiscated it later. After returning to Beijing, I asked her to install the system and send it to me again. As a result, it was never sent. When asked, she replied that the machines had problems after testing and the temperature was too high after starting. Well, I can only assume that 5 1ibm is a liar.

Theoretically, business administration.