There are generally Yahweh Shorthand Training Centers in Beijing, and several of them are relatively large, so you can compare them through online search.
Tuition fees are different, so you can consult more.
Generally speaking, if you can attend the meeting, you need at least one year of study and practice.
Suggestion:
Compared with several training courses, regular training courses generally don't let students buy speed recorders, which means they don't sell machines to make money. To tell the truth, the machine is still relatively expensive. In addition, you should consult more stenographers and see what they recommend.
Learning shorthand is still very hard. If you are not really determined to learn this technology, I suggest not to learn it. Many students give up halfway.
Stenographers still need extensive knowledge. If he wants to attend the meeting, he should at least understand what the speaker is saying, otherwise the quality of the recorded manuscript will be poor. Of course, you still have to accumulate more knowledge on your own.