Original problem, original solution, exactly the same ~ ~
In fact, if you have any questions that you can't answer, you can search on "seeking answers". I find it very convenient to use them. The question bank is huge, and nothing needs to be registered. Just type one or two key sentences, and then search.
Yes, I also added a skirt with buttons, from junior high school. The topics discussed in it are very intense, and there are many experts to solve the problems. You can add ~ ~!
Hope to adopt ~! ! !