I went to this years Guangzhou AV Fair which was my 3 rd time.They have over 400 rooms spread over 2 hotels.Reason for going this year was Line Magnetic putting on a full display of there speakers and I wasn't disappointed..
https://www.stereo.net.au/forums/topic/290593-china-guangzhou-av-fair-2019-december-6-8/page/2/
https://www.stereo.net.au/forums/topic/290593-china-guangzhou-av-fair-2019-december-6-8/page/2/