Not bad, Liang Zhibin's Siemens 200 entry is the best, no unnecessary nonsense. This is the best class I have ever seen. Other classes have more or less water, which may be due to problems in teaching methods. Some people know this, but they may not be able to say it. Know more, speak well, really good. Another teacher can't speak Mandarin, so he stands up and listens, otherwise he doesn't know what to say.

But if it is a gold medal, you can only watch it for one year, because it is a VIP for one year. At first, you were angry. Later, you set up a VIP for Tencent video, and downloading his movies is the same. You have to watch it within the validity period of VIP, otherwise you can't watch it. It's all like this now If you want to see more, you can make a gold diamond. It's cheap to do it when there are activities. I can ask before I buy it and watch it all my life. Now he has more classes.