2. The credits are chosen by yourself. You can choose two elective credits or SRTP credits (you may get 0/0.5/ 1 in the end). Finally, you can discuss, investigate, show and write papers. I originally wrote a paper of not less than 10,000 words, and some people said that I needed 30,000 words. Compared with attending classes, it is obvious that this credit is quite difficult to get!
However, in fact, if you are serious, you can know many strong people and really learn a lot, but you will be tired. It depends on the individual.
Finally, if you choose, take care!