Does one need a QQ number?
Another aspect I'm concerned about is, I guess, showmanship. My practice to date has always been to make the text a surprise. I use a standard ppt slide with a picture and a title to introduce the segment, and this I follow with some large image, often these days with moving parts that allow some narrative to be generated. This is used to introduce the text, which is then handed out. In theory, I'm creating interest.
I suppose I could rely on the likely fact that few students will voluntarily read the text ahead of time.
Yes you need a QQ number. (I got mine about 14 years ago and it only has 8 digits and the students "ooh and ah" when I give it to them. FWIW. And in fact it's worth something as one of them told me last month...I could sell my 8 digit number on Taobao, she told me, because it's "valuable". Chinese and numbers and value/worth. the endless cultural stream here. But I've digressed.)
Back on topic: I also don't like to pre-supply the content of my lesson, unless I feel it necessary...like an article I want them to read in prep. for the next class. Then they can download it or save it to their phones or go to the printshop with the file on their USB and get their own damn printing done, thank you very much. However they prefer their media delivered and displayed, I leave it up to them now. Every student has QQ on their 'puters and smartphones so every student will join whatever QQ Group you have set up for them. 100% coverage of the class.
I usually upload the good stuff (copies of PPts, etc. after I've delivered the lesson, which, during the lesson, I tell them I will do so as to limit the photo-snapping of slides during the lesson.
An unmentioned benefit of QQ here (yet) is that I use it to transfer large files between myself and others. I write some training manuals which I save in PDF format and need to transfer to other trainers or the Home office" for printing and we all rely on QQ File transfer for large file transfers. In the QQ App you click on a person's name in your contact list and then click the icon that looks like a folder with a sideways arrow. A box pops up giving you a choice whether that person is currently online, or not. One of the options is "Send Offline". Always choose that. Then choose the file you want to send, and quicker than you can say "Bob's your uncle" 5 times, the file will be uploaded to the QQ servers and the next time that person logs in, they'll get a message that there's a file waiting for them. They click it and quicker than they can say "Bob's your uncle" 3 times, they've downloaded the file. It's all just that easy.