Here are some links to on youtube that an Italian guy toured HK used hifi market I saw on another hifi forum. The last link is HK Audio show.
https://youtu.be/4uWQCnQsNgw
https://youtu.be/ytEzNW_8PYA
https://youtu.be/AufxZokNuTk
https://youtu.be/QIwraPJOO3s
https://youtu.be/4uWQCnQsNgw
https://youtu.be/ytEzNW_8PYA
https://youtu.be/AufxZokNuTk
https://youtu.be/QIwraPJOO3s