I want to buy a psp and a T 100 digital camera in Beijing recently. How should I choose, what should I pay attention to, or what other brands should I recommend?

These two things are good. Memory sticks can be mixed, but it is best not to do so, because the folder structure inside is different after formatting. It is suggested that if the price allows, you can buy two 4G sticks. I guess it's not a big problem. You should shop around before buying. You can check the price on Taobao. Of course, the things on the website are definitely cheaper than those in the store (I bought my PSP at Taobao at that time. I'm worried to death, but the quality of the goods is very good. I met a good businessman. I suggest buying this version of 3.52 M33-2, because it can support Chinese menus, which is very beneficial for beginners. When you buy it, the boss can give you an upgrade for free (don't forget to ask him to help you upgrade, the risk is relatively small) and buy other accessories together. You can ask the boss to introduce Taobao to you, where the price difference is much, and I can also give you advice first. As for T 100, I think it mainly depends on whether the screen is bad. After all, a 3-inch screen is still uncomfortable. The simple verification method is to press the power directly without opening the lens cover. At this time, the screen is completely black, so you can check whether there are any bad spots. Bad spots are usually blue. The bright spot in red is white, and other problems are smaller. Remember to ask for the receipt. This is the basis of national warranty. Don't save dozens of dollars. That would be trouble. I just bought T 100 recently. I think the effect during the day is good, but the photos at night are not flattering. If you don't pay attention to appearance, you'd better choose Canon. After all, it is a professional camera manufacturer. The photo quality is just like Canon IXUS 850 (SD800 is), but the appearance is not as good as T 100. After weighing, I bought T 100. Who told me I'm a Sony fan? Hehe, I can't resist the temptation of sliding design. Ha ha.