The formula was not available to look at, at this time.
Answer:
They are: listening, speaking, reading and writing. Most likely, your first few Chinese classes will focus mostly on listening and speaking, and will gradually incorporate reading and writing as you go, since these are the most difficult of the four.
Answer:
يا له من خط جميل لا أعرف ما يقوله سؤالك ، آسف إذا كنت لا أعرف